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Hypertension reduction through forgiveness training.

The objective of this study was to determine if patients with diagnosed stage-1 hypertension could benefit by a forgiveness training program to achieve measurable reductions in anger expression and blood pressure. Twenty-five participants were randomly divided into wait-listed control and intervention groups. The control group monitored blood pressure while the intervention group participated in an 8-week forgiveness training program. At the end of eight weeks, the wait listed group became an intervention group. Those who received forgiveness training achieved significant reductions in anger expression when compared to the control group. While reductions in blood pressure were not achieved by all the participants, those participants who entered the program with elevated anger expression scores did achieve significant reductions in blood pressure. It is suggested that forgiveness training may be an effective clinical intervention for some hypertensive patients with elevated levels of anger.

Adult↗

Systematic review and meta-analysis of the diagnostic accuracy of ultrasonography for deep vein thrombosis.

BACKGROUND: Ultrasound (US) has largely replaced contrast venography as the definitive diagnostic test for deep vein thrombosis (DVT). We aimed to derive a definitive estimate of the diagnostic accuracy of US for clinically suspected DVT and identify study-level factors that might predict accuracy. METHODS: We undertook a systematic review, meta-analysis and meta-regression of diagnostic cohort studies that compared US to contrast venography in patients with suspected DVT. We searched Medline, EMBASE, CINAHL, Web of Science, Cochrane Database of Systematic Reviews, Cochrane Controlled Trials Register, Database of Reviews of Effectiveness, the ACP Journal Club, and citation lists (1966 to April 2004). Random effects meta-analysis was used to derive pooled estimates of sensitivity and specificity. Random effects meta-regression was used to identify study-level covariates that predicted diagnostic performance. RESULTS: We identified 100 cohorts comparing US to venography in patients with suspected DVT. Overall sensitivity for proximal DVT (95% confidence interval) was 94.2% (93.2 to 95.0), for distal DVT was 63.5% (59.8 to 67.0), and specificity was 93.8% (93.1 to 94.4). Duplex US had pooled sensitivity of 96.5% (95.1 to 97.6) for proximal DVT, 71.2% (64.6 to 77.2) for distal DVT and specificity of 94.0% (92.8 to 95.1). Triplex US had pooled sensitivity of 96.4% (94.4 to 97.1%) for proximal DVT, 75.2% (67.7 to 81.6) for distal DVT and specificity of 94.3% (92.5 to 95.8). Compression US alone had pooled sensitivity of 93.8 % (92.0 to 95.3%) for proximal DVT, 56.8% (49.0 to 66.4) for distal DVT and specificity of 97.8% (97.0 to 98.4). Sensitivity was higher in more recently published studies and in cohorts with higher prevalence of DVT and more proximal DVT, and was lower in cohorts that reported interpretation by a radiologist. Specificity was higher in cohorts that excluded patients with previous DVT. No studies were identified that compared repeat US to venography in all patients. Repeat US appears to have a positive yield of 1.3%, with 89% of these being confirmed by venography. CONCLUSION: Combined colour-doppler US techniques have optimal sensitivity, while compression US has optimal specificity for DVT. However, all estimates are subject to substantial unexplained heterogeneity. The role of repeat scanning is very uncertain and based upon limited data.

Journal Article↗

Psychosocial and other working conditions in relation to body mass index in a representative sample of Australian workers.

BACKGROUND: The aim of the study was to examine the relationship between psychosocial and other working conditions and body-mass index (BMI) in a working population. This study contributes to the approximately dozen investigations of job stress, which have demonstrated mixed positive and negative results in relation to obesity, overweight and BMI. METHODS: A cross-sectional population-based survey was conducted among working Australians in the state of Victoria. Participants were contacted by telephone from a random sample of phone book listings. Information on body mass index was self-reported as were psychosocial work conditions assessed using the demand/control and effort/reward imbalance models. Other working conditions measured included working hours, shift work, and physical demand. Separate linear regression analyses were undertaken for males and females, with adjustment for potential confounders. RESULTS: A total of 1101 interviews (526 men and 575 women) were completed. Multivariate models (adjusted for socio-demographics) demonstrated no associations between job strain, as measured using the demand/control model, or ERI using the effort/reward imbalance model (after further adjustment for over commitment) and BMI among men and women. Multivariate models demonstrated a negative association between low reward and BMI among women. Among men, multivariate models demonstrated positive associations between high effort, high psychological demand, long working hours and BMI and a negative association between high physical demand and BMI. After controlling for the effort/reward imbalance or the demand/control model, the association between physical demand and working longer hours and BMI remained. CONCLUSION: Among men and women the were differing patterns of both exposures to psychosocial working conditions and associations with BMI. Among men, working long hours was positively associated with higher BMI and this association was partly independent of job stress. Among men physical demand was negatively associated with BMI and this association was independent of job stress.

Adolescent↗

Perspectives on advance directives in Japanese society: A population-based questionnaire survey.

BACKGROUND: In Japan, discussion concerning advance directives (ADs) has been on the rise during the past decade. ADs are one method proposed to facilitate the process of communication among patients, families and health care providers regarding the plan of care of a patient who is no longer capable of communicating. In this paper, we report the results of the first in-depth survey on the general population concerning the preferences and use of ADs in Japan. METHOD: A self-administered questionnaire was sent via mail to a stratified random sampling of 560 residents listed in the residential registry of one district of Tokyo, Japan (n = 165,567). Association between correlating factors and specific preferences toward ADs was assessed using contingency table bivariate analysis and multivariate regression model to estimate independent contribution. RESULTS: Of the 560 questionnaires sent out, a total of 425 participants took part in the survey yielding a response rate of 75.9 %. The results of the present study indicate that: 1) the most important components to be addressed are the specifics of medical treatment at the end of life stage and disclosure of diagnosis and prognosis; 2) the majority of participants found it suitable to express their directives by word to family and/or physician and not by written documentation; 3) there is no strong need for legal measures in setting up an AD; 4) it is permissible for family and physician to loosely interpret one's directives; 5) the most suitable proxy is considered to be a family member, relative, or spouse. Multivariate analysis found the following five factors as significantly associated with preferences: 1) awareness regarding living wills, 2) experience with the use of ADs, 3) preferences for end-of-life treatment, 4) preferences for information disclosure, and 5) intentions of creating a will. CONCLUSIONS: Written ADs might be useful in the Japanese setting when the individual either wishes: 1) to not provide a lot of leeway to surrogates and/or caregivers, and/or 2) to ensure his or her directives in the cases of terminal illness, brain death, and pain treatment, as well as regarding information disclosure.

Advance Directives↗

An online survey of chiropractors' opinions of Continuing Education.

BACKGROUND: Continuing Education (CE) for chiropractors is mandatory for licensure in most North American jurisdictions. Numerous chiropractic colleges have begun collaborating with universities to offer master's degree programs. Distance education master's degree programs may be desirable to allow full-time practicing doctors to further their post-graduate education. The present survey sought to answer three questions. First, what is the level of satisfaction of chiropractors with their continuing education? Second, what is the level of interest of chiropractors in online master's degree programs? Lastly, what is the response rate of chiropractors to an online survey? METHODS: An online survey consisting of 22 multiple choice questions was e-mailed to 1000 chiropractors randomly selected from the mailing list of an online chiropractic newsletter. Upon completion of the questionnaire, participants' answers were saved on a secure site. Data analysis included evaluation of the demographic characteristics of the respondents, their opinions of and patterns of taking CE including online education, preferred learning formats, and their interest in proposed online master's degree programs. A survey response rate was determined. RESULTS: Nearly 86% of respondents felt their previously completed CE courses were either somewhat or extremely satisfactory. Over ninety percent of respondents who had completed online or distance CE courses found them to be somewhat or extremely satisfactory. Almost half the respondents indicated that they most preferred online distance learning, while 34.08% most preferred face-to-face interaction. Fifty-three percent of respondents indicated an interest in starting a master's degree program; however 70.46% of respondents were interested in an online master's degree program that would offer CE credit. A response rate of 35.8% was obtained. CONCLUSION: Satisfaction among chiropractors with CE programs is high. The notion of completing a part-time online master's degree (or online combined with face-to-face interaction) appears to be popular among respondents, with a M.Sc. in Chiropractic Sciences being the most popular of those mentioned. Online surveys are a viable method of obtaining opinion in a cost and time efficient manner; there are some sources of bias involved in this type of research, and numerous steps need to be taken to obtain a suitable response rate.

Journal Article↗

Measuring the mental health status of a population: a comparison of the GHQ-12 and the SF-36 (MHI-5).

BACKGROUND: A comparison of the performance of the 5-item mental health dimension of SF-36 (MRI-5) with that of the 12-item General Health Questionnaire (GHQ-12) in a defined, non-patient population, using standard statistical tests. METHODS: A postal survey of 3000 patients aged 16-64 years was conducted. Patients were randomly selected from the practice lists of two general practices chosen to represent populations with different socio-economic characteristics. RESULTS: Considerable evidence was found for the internal consistency of both instruments (Cronbach's alpha 0.91 and 0.84 for GHQ-12 and the MHI-5 respectively) and for their construct validity in terms of distinguishing between groups with measured health differences. Both instruments showed a significant difference in the mean scores for men and women. In contrast to the GHQ-12, no correlation was found between age and score for the MHI-5. Both instruments were equally sensitive to socio-economic characteristics and to levels of social support. The scores on the two instruments were highly correlated (Spearman rank correlation-0.73). CONCLUSION: The MHI-5 has comparable psychometric performance to the GHQ-12, and can be used to measure and compare mental health in defined populations. Operational advantages of the MHI-5 over the GHQ-12 are that it is in the public domain, is part of a general health measure (SF-36) and is shorter.

Adolescent↗

Clinical decision rules "in the real world": how a widely disseminated rule is used in everyday practice.

BACKGROUND: Widespread, appropriate use of clinical decision rules would result in many benefits for health care. While it is known that clinicians report using these rules, little is known about how the rules are actually used in everyday practice. OBJECTIVES: To conduct a survey of emergency physicians to examine whether they use the Ottawa Ankle Rules (OAR) consistently, exclusively, and accurately. METHODS: A postal survey was administered to 399 emergency physicians randomly selected from the membership list of the Canadian Association of Emergency Physicians using Dillman's tailored design method for postal surveys. Results were analyzed via frequency distributions and linear regression. RESULTS: Response rate was 69.7% (262 of 376 eligible respondents), of whom 99.2% were familiar with the OAR. Most physicians (89.6%) reported using the OAR always or most of the time in appropriate circumstances, while only 42.2% reported basing their decisions to order radiography primarily on the rule. Physicians reported considering non-rule factors that are not related to the presence of a fracture (e.g., swelling: 54%), and factors that add no more predictive value over and above the rule (e.g., age >55 years: 55.2%). While 82.4% reported not having reviewed the rule for months or years, only 30.9% of the respondents were able to correctly remember the components of the rule. Errors in remembering rule components were more common among part-time (beta = 0.18, p = 0.009) and older (beta = 0.18, p = 0.04) physicians, and those who do not apply the rule consistently (beta = 0.14, p = 0.04). CONCLUSIONS: Most physicians report using and applying the OAR consistently, but most report that the rule is not the primary determinant of their decisions. Most apply this rule without referring to memory aids, yet their memory for this simple rule is imperfect. Future work should study how different memory aid strategies might improve the accuracy of rule application and reduce the use of nonpredictive cues.

Adult↗

Effects of cognitive behavior therapy in severely fatigued disease-free cancer patients compared with patients waiting for cognitive behavior therapy: a randomized controlled trial.

PURPOSE: Persistent fatigue is a long-term adverse effect experienced by 30% to 40% of patients cured of cancer. The main objective of this randomized controlled trial was to show the effectiveness of cognitive behavior therapy (CBT) especially designed for fatigue in cancer survivors. PATIENTS AND METHODS: A total of 112 cancer survivors with somatically unexplained fatigue were allocated randomly to immediate cognitive behavior therapy or to a waiting list condition for therapy. Both conditions were assessed two times, at baseline and 6 months later. The primary outcome variables were fatigue severity (Checklist Individual Strength) and functional impairment (Sickness Impact Profile). Data were analyzed by intention to treat. RESULTS: Analyses were based on 50 patients in the intervention condition and 48 patients in the waiting list condition. Patients in the intervention condition reported a significantly greater decrease than patients in the waiting list condition in fatigue severity (difference, 13.3; 95% CI, 8.6 to 18.1) and in functional impairment (difference, 383.2; 95% CI, 197.1 to 569.2). Clinically significant improvement for the CBT group compared with the waiting list group was seen in fatigue severity (54% v 4% of the patients, respectively) and in functional impairment (50% v 18% of the patients, respectively). CONCLUSION: Cognitive behavior therapy has a clinically relevant effect in reducing fatigue and functional impairments in cancer survivors.

Aged↗

Risk of Parkinson disease in women: effect of reproductive characteristics.

OBJECTIVE: To investigate the association between some fertile life characteristics and Parkinson disease (PD) in women. METHODS: Women affected by PD and control subjects were matched one to one by age (+/-2 years). One hundred thirty-one women with idiopathic PD and 131 matched control subjects were interviewed. Controls were randomly selected from the resident list of the same municipality of residence of cases. All subjects had a Mini-Mental State Examination score of > or =24. Cumulative length of pregnancies, age at menarche, age and type of menopause, and estrogen use before and after menopause were investigated in cases and controls through a structured questionnaire. Models of matched pair univariate analysis and conditional logistic regression analyses were used to calculate adjusted odds ratio (OR), 95% CI, and two-tailed p values for the investigated variables. RESULTS: PD was significantly associated with a fertile life length shorter than 36 years (OR 2.07; 95% CI 1.00 to 4.30) and a cumulative length of pregnancies longer than 30 months (OR 2.19; 95% CI 1.22 to 3.91). An inverse association between PD and surgical menopause (adjusted OR 0.30; 95% CI 0.13 to 0.77) was also found. CONCLUSIONS: An association between factors reducing estrogen stimulation during life and PD was found. These results support the hypothesis that endogenous estrogens play a role in the development of PD.

Age of Onset↗

Alcohol use in motion pictures and its relation with early-onset teen drinking.

OBJECTIVE: Little is known about the impact of viewing depictions of alcohol in entertainment media on adolescent drinking behavior. Our aims were to assess drinking in a sample of popular contemporary movies and to examine the association of movie alcohol exposure with early-onset drinking in an adolescent sample. METHOD: We conducted a school-based cross-sectional survey (N=4655) with longitudinal follow-up of never-drinkers (N=2406) involving adolescents ages 10-14 years and recruited from 15 New Hampshire and Vermont schools. Screen depictions of alcohol use were timed for each of 601 popular contemporary movies. Each adolescent was asked if he/she had seen a unique list of 50 movie titles, randomly selected from the larger pool. Movie alcohol use was summed for movies the adolescent had seen, adjusted to reflect exposure to the larger pool and modeled as a continuous variable. RESULTS: Ninety-two percent of the movies in the sample depicted drinking; median screen time for movie alcohol use was 2.5 minutes (interquartile range [IQR]: 0.9-5.0 minutes). Median exposure to movie alcohol use from the 601 movies was 8.6 hours (IQR: 4.6-13.5 hours). Overall 23.1% of the cross-sectional sample had tried alcohol, and 14.8% of initial nondrinkers had tried alcohol at the follow-up assessment. We found statistical evidence to support a curvilinear association between higher exposure to movie alcohol use and increased risk of prevalent and incident alcohol use, with a statistically significant linear and quadratic effect, and suggesting a higher dose-effect relationship at lower movie alcohol exposure levels compared to higher levels. The linear and the quadratic associations remained strong and significant in cross-sectional and prospective models after controlling for sociodemographics (grade in school, school, gender, parent education), personality characteristics of the adolescent (sensation seeking, rebelliousness, self-esteem), school performance, parenting style, and smoking experimentation, suggesting that exposure to movie alcohol use is an independent risk factor for early-onset alcohol use. CONCLUSIONS: This study provides the first evidence for an association between exposure to movie alcohol use and early-onset teen drinking. The association is moderate in effect size and independent of a number of potential confounders. Because exposure to movie alcohol use is common, it may have important population implications as a potentially modifiable risk factor.

Adolescent↗

National practices regarding payment to research subjects for participating in pediatric research.

OBJECTIVE: Payment to subjects for participation in research is reportedly common, but no published data documents the nature of this practice. Institutional review boards (IRBs) are responsible for ensuring both the safety and voluntary participation of research subjects, yet guidance from federal and expert pediatric sources regarding appropriate payment approaches is conflicting. Ethical issues of payment for participation of adult versus pediatric research subjects may differ. This empirical study sought to examine current payment practices for participation in pediatric research as reported by IRBs. DESIGN: An 18-question survey regarding payment practices for participation in pediatric research was sent to IRB chairs at member institutions of the National Association of Children's Hospitals and Related Institutions, and to a systematic random sample of IRB chairs listed with the Office for Protection From Research Risks. Descriptive, nonparametric, and qualitative analyses were used to describe institution types, payment practices, and correlations among responses. RESULTS: Data from 128 institutions that conduct pediatric research revealed that payment for participation in pediatric research was allowed by 66% of responding institutions, and practices varied widely among institutions. Most responding IRBs that allowed payment required disclosure of payment before enrollment (during the consent process), following federal guidelines more closely than American Academy of Pediatrics guidelines. An IRB's perception of potential benefits or harms of a study correlated with the amount of payment approved. CONCLUSIONS: IRBs must balance the need to recruit pediatric research subjects against the risk of undue influence during the recruitment process. Federal guidelines and expert pediatric opinion differ in recommendations regarding payment; responding IRBs appeared to follow federal guidelines more closely than guidelines proposed by the American Academy of Pediatrics.

Child↗

Policy versus practice: comparison of prescribing therapy and durable medical equipment in medical and educational settings.

OBJECTIVE: The American Academy of Pediatrics (AAP) has promoted pediatrician involvement in the care of children with special health care needs (CSHCN), including the prescription and/or supervision of therapies and durable medical equipment (DME) for children in both medical and educational settings, such as schools and early intervention programs. Through this survey, we attempted to quantify objectively how pediatricians direct and coordinate therapy and DME for CSHCN and how these efforts correlate with AAP recommendations. METHODS: A survey was mailed to a random sample of 500 physicians listed in the AAP directory, resulting in a final sample of 217 responding physicians who indicated that they provide services to CSHCN. Results of the survey were reported as proportions, means with standard deviations, or medians with interquartile range. Comparisons of proportions among certain subgroups of interest were made using Fisher exact tests. RESULTS: The most recent AAP policy revision addressing the role of physicians in prescribing therapy services for children with motor disabilities appeared in Pediatrics 1996. It listed 6 key items that should be part of a therapy prescription: diagnosis, precautions, type, frequency, anticipated goals (educators may prefer the term "objectives"), and duration. The policy addressed and emphasized the need for what may be additional objectives, namely regular communication between all parties involved, ongoing supervision and reevaluation of the program and problem, and awareness of other community resources for possible referrals. Except for providing a diagnosis, the majority of surveyed pediatricians do not regularly comply with AAP policy recommendations on prescribing therapies and DME in medical and educational settings. Physicians who were trained before 1980 tend to follow AAP recommendations more closely than later graduates. Decreasing involvement of private outpatient pediatricians in coordinating and supervising CSHCN's care was noted. Furthermore, the majority is willing to defer decisions about treatment and goals to nonphysician health care providers (NPHCPs) and, in some cases, even equipment vendors. More than two thirds of the respondents indicated that they would sign a prescription for therapy without their previous initiation if it had been initiated by a therapist. Likewise, most respondents said that they would sign a wheelchair prescription sent to them by a therapist. Few expressed confidence in determining the appropriateness of leg brace (orthosis) prescriptions and arm/hand brace prescriptions. The majority of survey participants said that they give open-ended length of time (no limits under 1 year) on prescriptions for therapy services as part of school-based programs. However, patients' conditions and their therapeutic or equipment needs may change during the school year. Because open-ended prescriptions do not require periodic renewal, they do not provide opportunities for periodic feedback that helps to ensure that the pediatrician is kept abreast of the patient's status and progress. The majority of respondents indicated that they would see a patient before signing either a therapy or DME prescription if they had not seen that patient in the past year. A little more than half of survey respondents said that they would participate initially in recommending which professional services or therapies should be performed as part of early intervention programs most of the time, but one third said that they participated less than half the time and approximately 14% said that they never participated. A majority would require being involved before authorizing therapy services as part of a school-based program, but a substantial minority would provide retroactive authorization for services that they did not initiate themselves. More than three quarters of respondents would prefer to let the therapist or educator set the goals. Only 58% of pediatricians reported receiving a detailed progress report once or twice a year, and approximately one fifth received no reports on patients in school-based programs. A literature review suggested that there are different perceptions among physicians and educationally based service providers regarding the physician's role in initiating and supervising educationally based services and equipment, which may influence the extent of physician involvement. AAP and other professional organizations, such as the American Medical Association and the American Academy of Physical Medicine and Rehabilitation, as well as federal guidelines and third-party payers emphasize the important role of physicians in initiating, determining the medical necessity, and ordering of services as well as in ongoing patient treatment. If therapists through their states' scope of practice guidelines have autonomy of practice or if the school self-funds educationally based services, then there may be no issues regarding physician authorization. However, if a physician's authorization is required for reimbursement, then the physician's professional, legal, and practice guidelines come into play. Physicians should be conscientious about fulfilling their responsibilities in serving as the medical home and supervising and monitoring medical services for their patients in both community and educational settings. Failure to properly fulfill the responsibilities inherent in signing a prescription may bring adverse consequences for the patient as well subject the physician to legal liability if adverse events occur. CONCLUSIONS: Ideally, there should be a seamless continuity and cooperation among the environments of medicine, home, community, and education rather than separate and perhaps conflicting domains. All health care professionals and other service providers involved should be acknowledged as collaborative team members. Except for provision of the diagnosis, the majority of surveyed pediatricians do not comply with AAP policy recommendations on prescribing community/medical-based and educationally based services for CSHCN. Furthermore, the majority are willing to defer these decisions to other NPHCP. This raises issues regarding overall continuity of care versus care of the child in a variety of environments, the concept of the medical home, and legal risk as a result of failure to follow federal and state practice guidelines. Also, there seem to be different cultural perceptions among physicians and educationally based service providers regarding the physician's role in educationally based services. These cultural differences should be explored further to promote a greater collegial cooperation and understanding. Decreasing involvement of private outpatient pediatricians in coordinating and supervising CSHCN care and a trend toward greater deference to NPHCP since 1979 were noted. If the numerous policies and guidelines previously promoted by AAP have not had a significant impact on pediatrician practices in these fields, then other, more effective alternatives should be explored.

Child↗

[Compliance with the metabolic goals in diabetes mellitus treatment in the rural area of Ourense, Spain].

BACKGROUND: To evaluate the degree to which the metabolic check-up objectives among Type II diabetes patients were met in rural primary care by comparing them to the values recommended by the American Diabetes Association (ADA) and the Diabetes in Primary Care Study Group (GEDAPS). METHODS: Descriptive cross-sectional study. A sample size was calculated based on the glycosolated hemoglobin (HbA1c) test in 119 individuals. A total of 253 patients with Type II diabetes followed up for at least two years at their healthcare facility took part. The patients in question were selected at random from among 17 medical lists at 11 rural healthcare facilities in the province of Ourense (Spain). Demographic variables, cardiovascular risk factors, pharmacological treatment, self-analyses, eye fundus, tactile sensitivity, HbA1c, lipid profile, blood pressure and body mass index data were taken from the patients' clinical records. RESULTS: A total of 44.3% of those in the sample had undergone an HbA1c test within the immediately prior six-month period, showing a value of under seven percent (7%). A total of 21.2% had a blood pressure of under 130/80, and 19.8% a LDL cholesterol level of under 100 mg/dl. A total of 40.7% of those patients with a LDL cholesterol level over 100 were not undergoing any hypolipemiant treatment. A total of 20.4% of the patients showing high blood pressure readings were not undergoing any blood pressure lowering treatment. On the basis of these three factors, a total of 2.5% met the check-up objectives. Thirty-six percent (36%) were antiaggregated with AAS. CONCLUSIONS: A major deficit is revealed both in the frequency of the check-ups conducted by the healthcare professionals as well as the number of interventions performed for achieving the proposed objectives, showing results far below what is recommended in the clinical practice guidelines.

Aged↗

Strategies for compound selection.

In-house pharmaceutical collections are no longer sufficient for sampling chemical spaces. As novel bioactive chemotypes are successfully identified by virtual and high -throughput screening, the ability to rapidly sift through large numbers of chemicals prior to acquisition or experiment is required. Strategies for compound selection include some of the following steps: 1.) database assembly ('in silico' inventory); 2a.) structural integrity verification (keep unique structures only); 2b.) limited exploration of alternative chemical representations for the uniques (stereoisomers, tautomers, ionization states); 3.) property and structural filtering (remove unwanted structures); 4.) 3D-structure generation (for virtual screening or 3D-based similarity); 5a.) clustering or statistical design for selection; 5b.) similarity-based selection (if bioactives are known); 5c.) receptor-based selection (if target binding site is known); 6.) add a random subset to the final list.

Cluster Analysis↗

Prospective study of serum gamma-glutamyltransferase and risk of NIDDM.

OBJECTIVE: Serum gamma-glutamyltransferase (GGT) levels are raised in obese individuals, and a particularly strong association with central obesity has been described. We hypothesized that elevated GGT levels are a marker for visceral fat, and specifically for hepatic steatosis (fatty liver), and that hepatic steatosis leads to hepatic insulin resistance. To test this hypothesis, we examined the association between GGT levels and risk of NIDDM. RESEARCH DESIGN AND METHODS: We carried out a prospective cohort study of incident cases of doctor-diagnosed NIDDM in a group of 7,458 nondiabetic men (aged 40-59 years) followed for a mean of 12.8 years (range 11.5-13.0). The men were randomly selected from general practice lists in 24 British towns. Cases of NIDDM were ascertained by repeated postal questionnaires to the men and by regular systematic review of primary care records. RESULTS: A total of 194 men developed NIDDM during follow-up. Mean serum GGT at baseline (geometric mean [95% CI]) was significantly higher in the NIDDM patients than in the rest of the cohort (20.9 [19.3-22.6] vs. 15.3 U/l [15.0-15.6], P < 0.0001). There was a smooth, graded increase in the age-adjusted risk of NIDDM with increasing GGT levels, with a relative risk in the top fifth of the distribution of 6.8 (3.5-12.9) relative to the bottom fifth (trend P < 0.0001). This association was independent of serum glucose and BMI and of other predictors of NIDDM with which GGT is associated, including alcohol intake and physical activity level (adjusted upper to lower fifth relative risk: 4.8 [2.0-11.8], trend P < 0.0001]). CONCLUSIONS: These findings suggest that a raised serum GGT level is an independent risk factor for NIDDM. Serum GGT level may be a simple and reliable marker of visceral and hepatic fat and, by inference, of hepatic insulin resistance.

Adult↗

Measuring workaholism: content validity of the Work Addiction Risk Test.

A total of 20 psychotherapists, randomly selected from a state list, critically examined the 25 items on the Work Addiction Risk Test for content validity. Subjects were asked to identify 25 items from a list of 35 which most accurately measured work addiction. Selected test items have generally high content validity for the domain of work addiction.

Adult↗

Soundness of treatment: a survey of psychologists' opinions.

A random sample of 300 psychologists listed in the National Register of Health Service Providers in Psychology were surveyed about the soundness of forms of mental health treatment and use of these treatments in practice. The 139 psychologists responding expressed greatest confidence in cognitive-behavioral therapy and antipsychotic medications. Approaches most in question as to soundness were primal therapy, neurolinguistic programming, bioenergetics, and aversive therapy. Factor analysis indicated widespread endorsement and use of multiple techniques within two broad camps of research-based "hard-edged" versus clinical wisdom/philosophy-based "soft-edged."

Attitude of Health Personnel↗

Australian Vietnam veterans: factors contributing to psychosocial problems.

OBJECTIVE: The objective of the present paper is to present comprehensive models of the current psychosocial morbidity of Australian Vietnam veterans. Seldom has research in this area attempted to 'untangle' direct and indirect influences on current functioning via possible pre-army, Vietnam and homecoming pathways. METHOD: The Australian Vietnam Veterans' Health Study gathered data on a sample of 641 veterans throughout Australia drawn randomly from army Vietnam tour lists of the era. The data arose from interview and army records of the era, and fall into four temporal categories: pre-army, Vietnam service, homecoming after Vietnam, and current state. Path analysis models of the veterans' current psychological morbidities and social wellbeing are used to identify direct aetiological influences of earlier era constructs on current state, free of confounding by indirect (often selection) effects. RESULTS: Our results indicate that psychological morbidity (particularly posttraumatic stress disorder) is largely influenced by combat and poor homecoming experiences, although pre-military characteristics do play some direct roles in symptomatology. Social dysfunction measures show smaller effects of the Vietnam War, which may be accounted for by an indirect association with Vietnam-related psychological morbidity. Some social measures show evidence of compensatory influences of combat, high combat leading to social dysfunction because of morbidity, but simultaneously being associated with healthier social disposition (possibly because of increased exservice activity). CONCLUSIONS: For Australian Vietnam veterans, combat-related and homecoming effects persist on a range of psychosocial endpoints 20-30 years after exposure. These effects are not explicable in terms of veterans pre-Vietnam characteristics.

Adolescent↗