PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “list randomization”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 109 records · Page 6Linked to original sources

Drug use by the elderly in Italy.

OBJECTIVES: To evaluate drug consumption in the elderly aged 75 years or more living at home. DESIGN: Cross-sectional study. SETTING: Old-old (i.e., > or = 75 y) people living in central Turin, a city in northern Italy. PARTICIPANTS: Thirty-four general practitioners (GPs), with 50 or more old-old people in their patient list, randomly chosen among the GPs working in the Unità Socio-Sanitaria Locale I (Local Health Unit I) of Turin; 261 old-old people (135 men and 126 women) randomly selected from the practice records. METHODS: Data were collected by the GP through a structured questionnaire during an office visit and by a social worker in a home interview within 14 days of the GP visit. GPs were asked to record every diagnosis and drug currently taken by the patient; social workers were trained in the administration of a structured questionnaire exploring sociodemographic variables, drug use (following the medication inventory strategy), disability, cognitive functions, and depressive symptoms. RESULTS: Nearly all subjects (95% of the women and 91% of the men) were taking at least 1 drug. The overall number of drugs recorded was 917 (47.1% for men and 52.9% for women), of which 172 (18.8%) were not reported by the GP but were recorded during the social worker's visit. The mean number of drugs was 3.2 for men and 3.8 for women, with a statistically significant difference (p = 0.02), while the mean number of diagnoses was 2.3 and 2.6, respectively. The study of correlates of drug consumption showed a strong association with number of diagnoses at univariate analysis (p < 0.0001, with a linear correlation coefficient of 0.64). No multivariate model showed a clear superiority over the simple one containing only the number of diagnoses in predicting the total number of drugs taken. Cardiovascular, nervous system, and alimentary tract drugs were the most frequently used. A total of 107 subjects (41%) were taking at least 1 unreported drug. CONCLUSIONS: Our study shows high drug consumption among old-old people, with nearly 20% of drugs taken not reported by the GP. These results emphasize the need for an essential therapeutic approach in old-old people, prescribing only drugs of scientifically proven efficacy. Furthermore, the GP must make more effort when collecting a drug history from old-old patients.

Aged↗

Coffee and gastric cancer: systematic review and meta-analysis.

We systematically reviewed the literature on the association between coffee consumption and gastric cancer and performed a meta-analysis of the results. Published cohort and case-control studies were identified in PubMed and reference lists. Random effects meta-analysis was used to pool effects from 23 studies, and heterogeneity was explored by stratification and meta-regression. The odds ratio (OR) for the overall association between coffee and gastric cancer (highest vs. lowest category of exposure) was 0.97 (95%CI: 0.86-1.09), similar for cohort (OR = 1.02; 95%CI: 0.76-1.37) and case-control studies (population-based: OR = 0.90; 95%CI: 0.70-1.15; hospital-based: OR = 0.97; 95%CI: 0.83-1.13). The OR was 1.26 (95%CI: 1.02-1.57) when considering five studies conducted in the USA, 0.97 (95%CI: 0.82-1.14) for the five Japanese studies, 0.98 (95%CI: 0.81-1.17) for the six studies from Europe, and 0.64 (95%CI: 0.47-0.86) for the two studies from South America. In this meta-analysis we found no adverse effect of coffee associated with gastric cancer. Knowledge on the level of exposure to different coffee constituents may provide a deeper understanding of this reassuring result and the real role of coffee on cancer risk.

Coffee↗

Feasibility of instructing radiology technologists in the performance of gastrointestinal fluoroscopy.

OBJECTIVE: We sought to determine if dedicated gastrointestinal technologists could be trained to properly perform esophagography and double-contrast barium enema examinations. SUBJECTS AND METHODS: Ninety-four patients undergoing double-contrast barium enema examinations and 123 patients undergoing esophagographic examinations were included in the study. The study was conducted over a 4-month period, with examinations performed by eight gastrointestinal technologists, 10 radiology residents, and four staff radiologists. Four random lists were generated for each set of examinations. Each staff gastrointestinal radiologist, who was unaware of who had performed the examination, independently scored the representative radiographs. RESULTS: For the double-contrast barium enema examinations, no statistically significant differences were found between the technologists and residents for amount of barium used, degree of distention, cecal opacification, and quality of spot radiographs. The technologist-performed examinations had a statistically significant lower mean fluoroscopy time (3.2 min, compared with 4.0 min for staff radiologists and 5.7 min for residents). For the esophagrams, no statistically significant differences between technologists and residents were found for single-contrast esophagrams; radiographs of the gastric cardia; assessment of motility, reflux, and transit of a solid bolus; and fluoroscopy time. Double-contrast esophagrams obtained by technologists received a better mean score than did those of the residents. CONCLUSION: Radiology technologists can be trained to perform high-quality esophagography and double-contrast barium enema examinations without an unacceptably high radiation dose.

Adult↗

Pharmacological manipulation of height: qualitative review of study populations and designs.

OBJECTIVE: Various substances that can have an important effect on height are increasingly available. However, research into pharmacological manipulation of height in children has been criticized. There are concerns about diagnostic criteria; about the medical, ethical, and economic ramifications of modulating growth in children with no endocrinological abnormalities; and about biased results due to weak study designs. The authors reviewed articles published since Jan. 1, 1995, to characterize recent research into this area. METHODS: 70 peer-reviewed articles published in 18 journals in 1995 describing effects of hormonal interventions to affect height were reviewed. Study population, intervention, main purpose (safety, physiology, or therapeutic effect), and methodology were examined. The search was expanded after 1995 to list randomized controlled trials (RCTs) investigating pharmacological manipulation in children and its effect on ultimate height in adults. RESULTS: The inexpensive and brief androgen therapy for pubertal delay has been examined in RCTs, but expensive, long-term treatments to alter final adult height in children have rarely been subjected to RCTs. Some outcome reports pooled subjects with different causes of short stature. Documentation of growth hormone deficiency is problematic. CONCLUSIONS: There is a lack of RCTs in which target populations and growth outcomes are explicitly defined. Further research into overcoming barriers to relevant RCT studies is needed.

Body Height↗

Improving pneumococcal vaccination rates: a three-step approach.

BACKGROUND: Streptococcus pneumoniae is the cause of significant preventable morbidity and mortality each year, especially among the elderly. This study evaluated the effectiveness of a three-step strategy to improve pneumococcal vaccination rates in patients ages 65 and older. METHODS: We obtained a baseline vaccination rate by chart review of a randomized list of patients ages 65 and older. Interventions that included physician education, a system of office prompts, and patient education were instituted for 1 year. We performed a second chart review to determine the success of the intervention. RESULTS: Vaccination rates increased significantly from 56.7% to 75.8%. No significant difference in initial vaccination rates between men and women was found. Although rates improved for both men and women, only the increase in vaccination for men was significant. CONCLUSIONS: This study shows that an easy and inexpensive intervention can substantially impact pneumococcal vaccination rates. Specifically, a three-step approach that combines provider education, office prompts, and patient education has proven effective.

Adolescent↗

Trimetazidine as adjunctive therapy to primary PTCA for acute myocardial infarction.

Acute myocardial infarction remains a complex medical problem despite major advances in its management, especially early myocardial reperfusion by percutaneous transluminal coronary angioplasty (PTCA). Situations such as absence of TIMI 3 flow grade and/or persistence of ST segment elevation despite successful PTCA, no-reflow phenomenon and absence of improvement of myocardial regional contractility despite angiographic TIMI 3 flow, probably involve microvascular injury due to neutrophil and platelet activation, free radical generation and myocardial metabolic disorders. Trimetazidine is a well tolerated and efficient antianginal agent, that experimentally reduces ischemia-reperfusion injuries, neutrophil infiltration, platelet aggregation and has antioxidant effects. The Limitation of Infarct Size by trimetazidine Trial (LIST) randomized 94 patients with acute myocardial infarction undergoing primary PTCA into two groups: placebo versus trimetazidine i.v. infusion started before PTCA and continued for 48 hours. Continuous ST segment monitoring was performed during and after primary PTCA. The major results of the study were a significantly more important and faster reduction of ST segment elevation with a trend to less ST segment exacerbation, in the trimetazidine group after PTCA compared to the placebo group. These results suggest that trimetazidine may efficiently reduce ischemia-reperfusion lesions after primary PTCA for acute myocardial infarction.

Angioplasty, Balloon, Coronary↗

Physician perceptions regarding competence of obstetrical providers and attitudes about other issues in obstetrical care.

BACKGROUND: Access to obstetrical care in the United States is unevenly distributed and is limited by provider availability, geography, and finances. Obstetrical care is provided by three distinct groups: obstetricians, family physicians, and certified nurse midwives (CNMs). Outcomes among these groups have not been shown to differ, but the attitudes and perceptions of these groups may impact access to obstetrical care. We examined physicians' perceptions regarding competence of obstetrical providers for low- and high-risk care and attitudes regarding CNMs and malpractice insurance costs. METHODS: We mailed a survey containing twenty value-neutral questions on competency, attitudes, and demographics to a randomized list of 3,000 OB/GYNs and 3,000 FPs obtained from the American Medical Association. Physicians surveyed included obstetricians (OB/GYNs), obstetricians specializing in high-risk (HROBs), family physicians who include obstetrics in their practice (FPOBs), and family physicians who do not do obstetrics (FPs). RESULTS: The response rate was 14.5 percent. All respondent types expressed a high degree of confidence in OB/GYNs to provide low-risk obstetrical care. FPOBs were not perceived to be as competent to provide the same care, but FPOBs have more confidence in their ability to provide low-risk obstetrical care than OB/GYNs have (71.4% versus 43.8%, P = .0001). Attitudes differed among the physicians about malpractice insurance fees paid by OB/GYNs and FPOBs. OB/GYNs strongly supported a similar fee schedule for these two groups and FPs supported differential rates (P = .001). CNMs were generally perceived as competent and were thought to warrant hospital privileges for vaginal deliveries. CONCLUSIONS: Physicians view their own and others' obstetrical competence and outcomes differently, but not necessarily accurately. Malpractice rates are not perceived by OB/GYNs as fair. Specialty societies need to promote cooperation and enhance education of all providers of obstetrics.

Adult↗

Effect of an outcomes-managed approach to care of neuroscience patients by acute care nurse practitioners.

OBJECTIVE: To improve clinical and financial outcomes for neuroscience patients by using an "outcomes-managed" model of care delivery and 2 acute care nurse practitioners as outcomes managers. METHODS: Baseline data from the year before implementation of the care model were compared with data from the first 6 months of implementation. A random list of 122 adult patients admitted to the neuroscience intensive care unit or the acute care neurosurgery unit of a university teaching hospital between January and December 1998 was generated to provide the baseline data. The prospective sample included 402 patients admitted to either unit during the first 6 months of the project (January through June 1999). The acute care nurse practitioners used an evidence-based multidisciplinary plan of care to manage all patients. RESULTS: No differences were found in age, sex, or ethnicity between groups. Patients managed by acute care nurse practitioners had significantly shorter overall length of stay (P = .03), shorter mean length of stay in the intensive care unit (P < .001), lower rates of urinary tract infection and skin breakdown (P < .05), and shorter time to discontinuation of the Foley catheter and mobilization (P <.05). The outcomes-managed group was hospitalized 2306 fewer days than the baseline group, at a total cost savings of $2,467328. CONCLUSIONS: Clinical and financial outcomes are improved significantly by identifying patients at risk, monitoring for complications, and having acute care nurse practitioners manage the patients.

Adolescent↗

Reliability of Enderlein's darkfield analysis of live blood.

CONTEXT: In 1925, the German zoologist Günther Enderlein, PhD, published a concept of microbial life cycles. His observations of live blood using darkfield microscopy revealed structures and phenomena that had not yet been described. Although very little research has been conducted to explain the phenomena Dr. Enderlein observed, the diagnostic test is still used in complementary and alternative medicine. OBJECTIVE: To test the interobserver reliability and test-retest reliability of 2 experienced darkfield specialists who had undergone comparable training in Enderlein blood analysis. SETTING: Inpatient clinic for internal medicine and geriatrics. METHODS: Both observers assessed 48 capillary blood samples from 24 patients with diabetes. The observers were mutually blind and assessed their findings according to a specific item randomization list that allowed observers to specify whether Enderlein structures were visible or not. RESULTS: The interobserver reliability for the visibility of various structures was kappa = .35 (95% CI: .27-.43), the test-retest reliability was kappa = .44 (95% CI: .36-.53). CONCLUSIONS: This pilot study indicates that Enderlein darkfield analysis is very difficult to standardize and that the reliability of the diagnostic test is low.

Adult↗

Self-reported chemical sensitivity and wartime chemical exposures in Gulf War veterans with and without decreased global health ratings.

This cross-sectional telephone survey study assessed prevalence rates of current chemical sensitivity, frequency of chemical odor intolerance, and self-reported Persian Gulf chemical exposures among 41 randomly sampled Department of Veterans Affairs outpatients who were Persian Gulf War (PGW) and PGW-era veterans. The participants were drawn from an initial random list of 100 veterans, of whom 28 PGW and 20 era veterans had correct telephone data on file. Of those contacted, 86% of PGW veterans (24/28) and 85% of era veterans (17/20) agreed to participate. Significantly more PGW veterans with poorer global health after military service reported considering themselves now "especially sensitive to certain chemicals" (86%, 12/14) than did the PGW veterans or era veterans in stable health (both comparison groups 30%, 3/10). Among PGW veterans, the subset with worse health associated with marked increases in chemical odor intolerance since their military service had a significantly higher odds ratio for exposure to multiple chemicals, notably wartime pesticides and insect repellent, than did comparison groups. The high rate of chemical sensitivity of PGW veterans with deteriorated health is almost three times that in PGW-era veterans and in elderly primary care outpatient veterans at the same Department of Veterans Affairs medical center and in community-based civilian samples (i.e., 30%). These preliminary findings suggest the need for further study of chemical sensitivity, including tests for acquired increases in neural sensitizability to multiple low-level chemicals, in ill PGW veterans.

Adult↗

A randomized, wait-list controlled clinical trial: the effect of a mindfulness meditation-based stress reduction program on mood and symptoms of stress in cancer outpatients.

OBJECTIVE: The objective of this study was to assess the effects of participation in a mindfulness meditation-based stress reduction program on mood disturbance and symptoms of stress in cancer outpatients. METHODS: A randomized, wait-list controlled design was used. A convenience sample of eligible cancer patients enrolled after giving informed consent and were randomly assigned to either an immediate treatment condition or a wait-list control condition. Patients completed the Profile of Mood States and the Symptoms of Stress Inventory both before and after the intervention. The intervention consisted of a weekly meditation group lasting 1.5 hours for 7 weeks plus home meditation practice. RESULTS: Ninety patients (mean age, 51 years) completed the study. The group was heterogeneous in type and stage of cancer. Patients' mean preintervention scores on dependent measures were equivalent between groups. After the intervention, patients in the treatment group had significantly lower scores on Total Mood Disturbance and subscales of Depression, Anxiety, Anger, and Confusion and more Vigor than control subjects. The treatment group also had fewer overall Symptoms of Stress; fewer Cardiopulmonary and Gastrointestinal symptoms; less Emotional Irritability, Depression, and Cognitive Disorganization; and fewer Habitual Patterns of stress. Overall reduction in Total Mood Disturbance was 65%, with a 31% reduction in Symptoms of Stress. CONCLUSIONS: This program was effective in decreasing mood disturbance and stress symptoms in both male and female patients with a wide variety of cancer diagnoses, stages of illness, and ages. cancer, stress, mood, intervention, mindfulness.

Ambulatory Care↗

Cognitive-behavioral therapy for women with lifelong vaginismus: a randomized waiting-list controlled trial of efficacy.

Women with lifelong vaginismus (N=117) were randomly assigned to cognitive-behavioral group therapy, cognitive-behavioral bibliotherapy, or a waiting list. Manualized treatment comprised sexual education, relaxation exercises, gradual exposure, cognitive therapy, and sensate focus therapy. Group therapy consisted of ten 2-hr sessions with 6 to 9 participants per group. Assistance with minimal-contact bibliotherapy consisted of 6 biweekly, 15-min telephone contacts. Twenty-one percent of the participants left the study before posttreatment assessment. Intent-to-treat analysis revealed that successful intercourse at posttreatment was reported by 14% of the treated participants compared with none of the participants in the control condition. At the 12-month follow-up 21% of the group therapy participants and 15% of the bibliotherapy participants, respectively, reported successful intercourse. Cognitive-behavioral treatment of lifelong vaginismus was thus found to be efficacious, but the small effect size of the treatment warrants future efforts to improve the treatment.

Adolescent↗

Chronically ill patients treated by spiritual healing improve in quality of life: results of a randomized waiting-list controlled study.

OBJECTIVE: Little is known about the effects of distant healing in chronically ill patients, the population most likely to see a healer in practice. This study investigated whether distant healing as found in normal practice with patients representative of those seeking treatment from healers changes patients' quality of life substantially. METHOD: Randomized, waiting-list controlled study of distant healing (anonymous, amulet, and allowing for personal contact) in chronically ill patients. OUTCOME MEASURE: Patient-reported quality of life as expressed by the sum of all MOS SF-36 health survey items. RESULTS: Sixty patients were treated by various methods of distant healing over 5 months; 59 patients were put on a waiting list (control). Quality of life improved significantly (p < 0.0005) in the treated group (10 points), while it remained stable in the control group. Positive expectation was significantly correlated with outcome. CONCLUSION: Chronically ill patients who want to be treated by distant healing and know that they are treated improve in quality of life.

Adult↗

Treatment of trichotillomania with behavioral therapy or fluoxetine: a randomized, waiting-list controlled study.

BACKGROUND: Both behavioral therapy (BT) and serotonin reuptake inhibitors have been reported effective in the treatment of trichotillomania. This study examines the efficacy of BT and fluoxetine hydrochloride compared with a waiting-list (WL) control group. METHODS: Forty-three patients with trichotillomania entered a 12-week randomized, WL-controlled study of BT and fluoxetine (60 mg/d). Forty patients (14 in the BT group, 11 in the fluoxetine group, and 15 in the WL group) completed the trial. Treatment effects were evaluated using the Massachusetts General Hospital Hairpulling Scale, and severity of hair loss was rated by independent assessors. In addition, we measured general symptoms of psychopathologic abnormalities and depression. RESULTS: For reducing the symptoms of trichotillomania, BT was superior. Patients in the BT group showed a significantly greater reduction in trichotillomania symptoms, higher effect sizes (Massachusetts General Hospital Hairpulling Scale: BT, 3.80; fluoxetine, 0.42; and WL, 1.09), and more clinically significant changes (BT, 64%; fluoxetine, 9%; and WL, 20%) than patients in the fluoxetine and WL groups. For severity of hair loss, a similar trend was also found in favor of the BT group. No significant differences between groups were established for general psychopathologic and depressive symptoms. CONCLUSIONS: Behavioral therapy is highly effective for reducing symptoms of trichotillomania in the short term, whereas fluoxetine is not.

Adolescent↗

Evidence for language recoding in autistic, retarded and normal children: a re-examination.

In a replication and extension of earlier studies by Hermelin & O'Connor, language recoding abilities in autistic, retarded and normal children matched for mental age and digit span, were compared in a verbal recall task. Random word lists, sentences, and anomalous sentences, eight or 12 items in length (for high and low memory span subgroups) were presented and the number of words recalled from each type of input was scored. All low span children recalled sentences better than random lists with normal children superior to retarded and autistic children and the latter group poorer than the retarded group. Autistic children showed a recency effect with both types of input. There were no group differences amongst high span children and sentences were again better recalled than random lists. In Expt II sentences were better recalled than anomalous sentences, with autistic and retarded children equivalent in performance and poorer than normal children. Although low span autistic children were clearly deficient in recall of sentence material when compared with the two control groups, the effect of conditions showed that they were able to use structure to improve recall. Since high span autistic children did not perform differently from controls it is suggested that results from this kind of study may not be generalizable, and that claims for a specific coding deficit in autistic children need further substantiation.

Autistic Disorder↗

[Benzodiazepine prescription at a health center: prevalence, its use and user characteristics].

OBJECTIVES: To find the prevalence of prescription of benzodiazepines (BDZ) in 1997 at a health centre (HC), and the characteristics of both their consumption and the takers. DESIGN: Crossover, observational study. SETTING: Primary care urban centre. PATIENTS: From a total of 7356 patients over 14 with clinical records and belonging to four lists, a random sample stratified by lists was selected. INTERVENTION: A form was used to gather social and demographic data, educational level, family context, linked pathologies, number of visits to HC per year, BDZ prescription and variables defining the kind of consumption. MAIN RESULTS: The prevalence of BDZ prescription was 7.7% (CI, 6-10%). Consumption profile: 33% long BDZ, 31% intermediate and 33% short. 44% consumed BDZ occasionally or for less than 2 weeks, and 42% had been taking it for over a year. For 56% (95% CI, 40-70) their G.P. was the origin of the prescription. The reason for the prescription was not specified in 42% of cases. The variables which defined the profile of the consumers, included in the logistic regression, were: sex, number of visits and linked pathologies, whose OR were: 1.57 (CI, 1.08-2.03), 1.11 (CI, 1.06-1.17) and 1.61 (CI, 1.04-2.05). CONCLUSIONS: The prevalence of BDZ prescription during 1997 in the population seen at our clinics was very similar to the figures found in other studies, with higher annual consumption averages and without the reason for taking it being specified in half the cases. The profile of BDZ takers was: mainly women, people with linked pathologies, and as a function of the number of attendances.

Adult↗

Regular dental visits and dental anxiety in an adult dentate population.

BACKGROUND: The objective of this study was to investigate factors associated with regular dental visits in an adult population. METHODS: A representative sample of non-institutionalized dentate adults (aged 18 through 69 years) from the Detroit tricounty area (Wayne, Macomb and Oakland counties) was randomly selected using list-assisted random digit dialing. The authors collected the data through a self-administered questionnaire that asked for information about regular dental visits, private dental insurance, perceived oral health status and dental treatment experience. The authors used Corah's Dental Anxiety Scale to measure respondents' dental anxiety level. They also conducted a descriptive analysis and a logistic regression analysis. RESULTS: A final sample of 630 adults who resided in 368 households participated in this study. Seventy-two percent of respondents had dental insurance (excluding Medicaid). About 63 percent reported that they visited a dentist regularly. About 12 percent of adults had high dental anxiety (a score of 13 or higher on the Corah scale). A logistic regression model found that dental anxiety, dental insurance status and perceived oral health status were significantly associated with regular dental visits after accounting for sociodemographic factors such as sex, age and income. Among those who had dental insurance, dentally anxious adults were significantly less likely to visit dentists regularly. However, this association was not significant among respondents without dental insurance. CONCLUSION: Dental insurance, perceived oral health status and dental anxiety were associated with regular dental visits. Dental anxiety was an influencing factor in regular dental visit behavior, especially among adults who had private dental insurance. CLINICAL IMPLICATIONS: Practitioners need to be educated about the causes of dental anxiety and receive training in how to treat the problem.

Adolescent↗