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Biomedical subjects

J K Bobo

Publications and source records attributed to J K Bobo.

At least 19 recordsLinked to original sources

Findings from 752,081 clinical breast examinations reported to a national screening program from 1995 through 1998.

BACKGROUND AND METHODS: Mammography programs have received extensive study, but little is known about the outcome of clinical breast examinations (CBEs) performed in community settings. Consequently, we analyzed data from the National Breast and Cervical Cancer Early Detection Program on CBEs provided to low-income women from 1995 through 1998 and determined the percentage of CBEs considered to be abnormal, suspicious for cancer; the rates of cancer detection; and the sensitivity, specificity, and positive predictive value of CBEs. RESULTS: We analyzed data from 752081 CBEs and found that 6.9% of all CBEs were coded abnormal, suspicious for cancer, and that 5.0 cancers were detected per 1000 examinations (95% confidence interval [CI] = 4.9-5.2). The values observed for sensitivity (58.8%) and specificity (93.4%) were comparable to those reported for the CBE component of clinical trials. The observed positive predictive value was 4.3%. About 74% of all records also reported mammography results. The cancer-detection rate among records reporting an abnormal CBE and normal mammography was 7.4 cancers per 1000 records (95% CI = 6. 3-8.4). When the CBE was normal but the mammography was abnormal, the rate was 42.0 cancers per 1000 records (95% CI = 39.9-44.1). When both CBE and mammography results were abnormal, the rate was 170.3 cancers per 1000 records (95% CI = 162.7-177.9). Cancer detection could not be attributed entirely to CBE or mammography on 38% of the records in the latter subset because the tests were performed on the same day. CONCLUSION: CBEs performed in community-based screening programs can detect breast cancers as effectively as CBEs performed in clinical trials and may modestly improve early-detection campaigns.

Adult↗

Implementing recommendations for the early detection of breast and cervical cancer among low-income women.

SCOPE OF THE PROBLEM: Among U.S. women, breast cancer is the most commonly diagnosed cancer and remains second only to lung cancer as a cause of cancer-related mortality. The American Cancer Society (ACS) estimates that 182,800 new cases of female breast cancer and 41,200 deaths from breast cancer will occur in 2000. Since the 1950s, the incidence of invasive cervical cancer and mortality from this disease have decreased substantially; much of the decline is attributed to widespread use of the Papanicolaou (Pap) test. ACS estimates that 12,800 new cases of invasive cervical cancer will be diagnosed, and 4,600 deaths from this disease will occur in the United States in 2000. ETIOLOGIC FACTORS: The risk for breast cancer increases with advancing age; other risk factors include personal or family history of breast cancer, certain benign breast diseases, early age at menarche, late age at menopause, white race, nulliparity, and igher socioeconomic status. Risk factors for cervical cancer include certain human papilloma virus infections, early age at first intercourse, multiple male sex partners, a history of sexually transmitted diseases, and low socioeconomic status. Black, Hispanic, or American Indian racial/ethnic background is considered a risk factor because cervical cancer detection and death rates are higher among these women. RECOMMENDATIONS FOR PREVENTION: Because studies of the etiology of breast cancer have failed to identify feasible primary prevention strategies suitable for use in the general population, reducing mortality from breast cancer through early detection has become a high priority. The potential for reducing death rates from breast cancer is contingent on increasing mammography screening rates and subsequently detecting the disease at an early stage--when more treatment options are available and survival rates are higher. Effective control of cervical cancer depends primarily on early detection of precancerous lesions through use of the Papanicolaou test, followed by timely evaluation and treatment. Thus, the intended outcome of cervical cancer screening differs from that of breast cancer screening. In 1991, the National Breast and Cervical Cancer Early Detection Program (NBCCEDP) was implemented to increase breast and cervical cancer screening among uninsured, low-income women. RESEARCH AGENDA: To support recommended priority activities for NBCCEDP, CDC has developed a research agenda comprising six priorities. These six priorities are a) determining effective strategies to communicate changes in NBCCEDP policy to cancer screening providers and women enrolled in the program; b) identifying effective strategies to increase the proportion of enrolled women who complete routine breast and cervical cancer rescreening according to NBCCEDP policy; c) identifying effective strategies to increase NBCCEDP enrollment among eligible women who have never received breast or cervical cancerscreening; d) evaluating variations in clinical practice patterns among providers of NBCCEDP screening services; e) determining optimal models for providing case-management services to women in NBCCEDP who have an abnormal screening result, precancerous breast or cervical lesion, or a diagnosis of cancer; and f) conducting economic analyses to determine costs of providing screening services in NBCCEDP. CONCLUSION: The NBCCEDP, through federal, state, territorial, and tribal governments, in collaboration with national and community-based organizations, has increased access to breast and cervical cancer screening among low-income and uninsured women. This initiative enabled the United States to make substantial progress toward achieving the Healthy People 2000 objectives for breast and cervical cancer control among racial/ethnic minorities and persons who are medically underserved. A continuing challenge for the future is to increase national commitment to providing screening services for all eligible uninsured women to ultimately reduce morbidity and mortality from breast and cervical cancer.

Breast Neoplasms↗

Mammography and breast cancer detection by race and Hispanic ethnicity: results from a national program (United States).

OBJECTIVE: Some of the racial and ethnic variation in breast cancer incidence rates may reflect differential use of mammography. We report breast cancer rates using mammography and diagnostic data from five race/ethnicity groups. METHODS: Mammography data were analyzed for 573,751 women who received breast cancer screening between July 1991 and March 1998 from the National Breast and Cervical Cancer Early Detection Program (NBCCEDP). Abnormal mammography rates, breast cancer detection rates, and cancer stage distribution data are presented by race/ethnicity and screening round (first or subsequent). RESULTS: For the first screening round, percentages of abnormal mammographies ranged from 7.3% among black women to 9.3% among Asian/Pacific Islander women. Cancer detection rates ranged from 4.9 cancers per 1000 mammograms for Hispanic and American Indian/Alaska Native (AI/AN) women to 7.7 per 1000 for white women. Subsequent round rates were lower but varied similarly. AI/AN women had the highest percentage (68%) of first-round cancers detected in the early stage (range for the other groups: 52-63%). CONCLUSIONS: Breast cancer detection rates for racial and ethnic groups in this program varied less than published population-based incidence rates. Differential use of mammography among these groups may account for some of the variation reported for breast cancer incidence.

Adult↗

Sociocultural influences on smoking and drinking.

Numerous research studies have shown that sociocultural factors influence the initiation and continued use of alcohol and tobacco among adolescents and adults. Few studies have examined the effects of sociocultural factors on the tendency of smokers to drink and drinkers to smoke. However, the limited evidence available suggests that such factors exist and that the strength of the association between alcohol and tobacco use behaviors varies with the levels of alcohol use. Public health interventions focused on concurrent tobacco and alcohol use could yield further reductions in the morbidity and mortality associated with these substances.

Alcohol Drinking↗

Tobacco cessation with patients recovering from alcohol and other substance abuse.

This article focuses on the problem of tobacco cessation in the patient recovering from alcohol or other substance abuse. The authors review the epidemiology of the problem, specific health risks to this population from continued tobacco use, and recent research findings that address previous treatment concerns. Recommendations for counseling by physicians are made. These include an algorithm for determining the patient's stage of readiness for making a quit attempt, specific counseling tasks based on the patients stage, and motivational counseling strategies aimed at increasing the patients motivation to quit.

Algorithms↗

Factors that may discourage annual mammography among low-income women with access to free mammograms: a study using multi-ethnic, multiracial focus groups.

Age-eligible women enrolled in the National Breast and Cervical Cancer Early Detection Program can obtain free or low-cost mammograms annually, but many do not routinely complete rescreening. This study investigated the rescreening behavior of low-income women by conducting 8 focus groups in Texas with enrollees who had access to free mammograms. Concerns mentioned in the focus groups included fear of radiation, anxiety that the test might not find a cancer that was there, and worries that cancer might be detected. In all groups, some women mentioned the embarrassment, discomfort, or pain they experienced during a prior mammogram, although no one indicated they would refuse to have another mammogram because of these concerns. Findings highlight the useful insights that can be obtained from focus groups and underscore the need for more research on aspects of the experience of mammography that may affect rescreening.

Adult↗

Prevalence of morphologic defects in spermatozoa from beef bulls.

OBJECTIVE: To determine the overall prevalence of morphologic defects in spermatozoa from beef bulls and to determine whether prevalence varies with the age of the bull. DESIGN: Cross-sectional observational study. ANIMALS: 2,497 beef bulls that were evaluated for breeding soundness in 1994 by 29 practicing veterinarians in a 5-state geographic region. PROCEDURE: Slides of spermatozoa from each bull were made and submitted by practicing veterinarians for morphologic evaluation. One hundred spermatozoa per slide were examined, and each was classified as having 1 of 9 morphologic defects or as normal. RESULTS: 63% of bulls evaluated were 10 to 12 months old, and 20% were 13 to 18 months old. A mean of 70.6% of spermatozoa was classified as normal. Most common defects were proximal droplets (8.4%), distal midpiece reflexes (6.7%), separated heads (5.5%), and distal droplets (3.8%). Other defects were seen < 2% of the time. Bulls 10 to 12 months of age had a higher prevalence of proximal and distal droplet defects than older bulls. CLINICAL IMPLICATIONS: Practitioners conducting breeding soundness evaluations in beef bulls must be aware of common spermatozoal defects. Bulls that are evaluated at a young age will have more defects than older bulls and should be reevaluated, particularly for those defects for which prevalence decreases with age.

Aging↗

Practical steps to smoking cessation for recovering alcoholics.

Smoking rates among persons with a history of alcohol abuse are triple that of the general public. Strong evidence indicates that the risk of cancer and cardiovascular disease is higher in recovering alcoholics than in peers who smoke, but do not drink alcohol. Yet these persons often receive less than optimal tobacco counseling out of fear that attempts at smoking cessation will jeopardize their sobriety. Recent research, however, does not support this belief; rather, it suggests that smoking cessation may actually enhance alcohol abstinence. A model for more effective counseling of smokers in recovery is presented, including an algorithm for assessing stages of readiness to change, with activities tailored for each stage. Specific motivational counseling techniques may be useful in encouraging recovering alcoholics to progress to the point that they are ready to change their smoking behavior.

Alcoholism↗

Effect of smoking cessation counseling on recovery from alcoholism: findings from a randomized community intervention trial.

AIMS: To assess the effects of a smoking cessation program for recovering alcoholics on use of alcohol, tobacco and illicit drugs after discharge from residential treatment. DESIGN AND SETTING: A randomized community intervention trial design was employed in which 12 residential drug treatment centers in Iowa, Kansas and Nebraska were matched and then randomly assigned to the intervention or control condition. PARTICIPANTS: Approximately 50 adult residents (inpatients) from each site were followed for 12 months after treatment discharge. INTERVENTION: Participating residents in the six intervention centers received a 4-part, individually tailored, smoking cessation program while those in the six control sites received usual care. FINDINGS: Both moderate and heavy drinking rates were reduced in the intervention group. Intervention site participants were significantly more likely than controls to report alcohol abstinence at both the 6-month (OR = 1.59, 95%CI: 1.09-2.35) and 12-month assessment (OR = 1.84, 95%CI: 1.28-2.92). Illicit drug use rates were comparable. Effect of the intervention on tobacco quit rates was not statistically significant. CONCLUSIONS: Counseling alcoholics in treatment to quit smoking does not jeopardize the alcohol recovery process. However, low-intensity tobacco interventions are unlikely to yield high tobacco quit rates.

Adult↗

Depression screening scores during residential drug treatment and risk of drug use after discharge.

Depression is a highly prevalent disorder among patients in residential drug treatment, and the prognosis for recovery from chemical dependency among depressed persons is uncertain. This report presents one-year follow-up data on alcohol, cocaine, and marijuana use among patients who completed the Center for Epidemiologic Studies Depression Scale (CES-D) during their inpatient stay in one of 12 residential treatment programs in the Midwest. At 12-month follow-up, CES-D scores in the depressed range were significantly associated with risk of relapse for alcohol and marijuana use, but not for cocaine use.

Adult↗

Predictors of tobacco quit attempts among recovering alcoholics.

Reported here are findings from a randomized community intervention trial that followed 90 recovering alcoholic smokers for 6 months. Because the brief (10-min) study intervention had no effect on tobacco use, intervention and control participants were pooled to identify predictors of attempts to quit smoking that may inform clinical practice. During the first 6 months after discharge from residential alcohol treatment, 31% of all participants reported having quit smoking for 48 hrs or longer. Demographic and drug use history variables did not predict quit attempts, but two baseline tobacco use variables did, specifically the Fagerstrom Test for Nicotine Dependence and stage of readiness to quit smoking, p < .01. Participants with high or very high nicotine dependence scores were significantly less likely than those with moderate or low scores to attempt smoking cessation. Compared to those in precontemplation at baseline, those in the preparation stage of readiness to change were about 12 times more likely to make a serious quit attempt.

Adolescent↗

Nicotine dependence and intentions to quit smoking in three samples of male and female recovering alcoholics and problem drinkers.

We report gender-specific data on tobacco use and quitting smoking from three studies of nicotine-related issues during alcoholism treatment. Study 1 data are from 309 alcoholism treatment professionals who were current or former smokers with a personal history of alcoholism or problem drinking. Study 2 data are from 496 smokers receiving counseling for their problems with alcohol in outpatient alcoholism treatment centers. Study 3 data are from 90 smokers receiving intensive alcoholism treatment in residential or inpatient programs. Interest in smoking cessation was high in all groups. Significant gender differences were apparent among the recovering alcoholics but not among the problem drinkers. Severity of alcohol use problems also showed some association with smoking cessation behaviors.

Adult↗

Nicotine addiction counseling for chemically dependent patients.

A total of 771 professionals employed in alcohol treatment programs in Nebraska were surveyed to determine whether their personal alcohol and tobacco use status or characteristics of their treatment programs were related to whether they provided nicotine addiction counseling. About a third of respondents agreed that clients in active treatment should be urged to quit smoking. Compared with respondents who had never smoked, current smokers were one-half to one-third as likely to provide such counseling. Greater knowledge of the effects of nicotine addiction and employment in programs that provided nicotine addiction education or treatment increased the odds of counselors' providing nicotine counseling. Counselors' alcohol use status was not associated with nicotine counseling practices.

Adult↗

Acute encephalopathy and seizure rates in children under age two years in Oregon and Washington state.

A surveillance network was established in Oregon and Washington state to identify cases of certain neurologic illnesses during a one-year period (August 1, 1987 to July 31, 1988) among children 1-24 months of age. Reported here are the observed case occurrence rates and findings from capture-recapture analyses used to predict rates that would have been observed had ascertainment been complete. The network consisted of a hospital component involving 98% of all eligible facilities, a provider component involving 93% of all eligible pediatricians and neurologists, and a research staff component of record abstractors. Of 3,876 potential cases reported, 626 met the study criteria. The observed rates for the primary diagnostic groups were: encephalopathies, 16 per 100,000 children; infantile spasms, 10 per 100,000 children; afebrile seizures, 159 per 100,000 children; and complex febrile seizures, 101 per 100,000 children. Of the 626 qualifying cases, 41% were reported by two or more surveillance components. Capture-recapture analyses with log-linear modeling to control for source dependence suggested 80% of all study cases were detected. Comparable percentages for the four illness groups were: encephalopathies, 82%; infantile spasms, 94%; afebrile seizures, 69%; and complex febrile seizures, 91%. The predicted rate for afebrile seizures, corrected for under-ascertainment, exceeded the upper 95% confidence interval bound around the observed rate. For all other conditions, predicted rates fell within the 95% confidence intervals around the observed rates. These findings suggest capture-recapture analyses should be applied to the full sample of cases and to relevant disease substrata.

Acute Disease↗

Risk of serious acute neurological illness after immunization with diphtheria-tetanus-pertussis vaccine. A population-based case-control study.

OBJECTIVE: To evaluate the association between serious acute neurological illness and receipt of whole-cell pertussis vaccine, given as diphtheria-tetanus-pertussis (DTP) vaccine. DESIGN: Population-based case-control study. SETTING: Outpatient and inpatient hospital settings, physician practices, and the general population in Washington and Oregon states. SUBJECTS: A total of 424 confirmed cases of neurological illness were identified prospectively during a 12-month period by statewide active surveillance from the population of 218,000 children 1 to 24 months of age living in Washington and Oregon (estimated 368,000 DTP immunizations given). Each case child was matched to two population control children by birth date (+/- 5 days), gender, and county of birth. Written immunization records were used to determine whether illness occurred within 7 days of immunization in case children, or within 7 days of the same reference date in control children, thus qualifying as exposed. MAIN OUTCOME MEASURES: Outpatient and inpatient cases of complex febrile seizures, seizures without fever, infantile spasms, and acute encephalitis/encephalopathy confirmed by an expert panel masked to immunization history. RESULTS: The estimated odds ratio (OR) for onset of serious acute neurological illness within 7 days for young children exposed to DTP vaccine was 1.1 (95% confidence interval [CI], 0.6 to 2.0). When the analysis was restricted to children with encephalopathy or complicated seizures and adjusted for factors possibly affecting vaccine administration, the OR was 3.6 (95% CI, 0.8 to 15.2). Odds ratios for specific study diagnoses varied, but all CIs included 1. No elevated risk was observed for the largest group of illnesses studied, nonfebrile seizures (OR, 0.5; 95% CI, 0.2 to 1.5). CONCLUSIONS: This study did not find any statistically significant increased risk of onset of serious acute neurological illness in the 7 days after DTP vaccine exposure for young children.

Acute Disease↗

Cigarette smoking cessation and alcohol treatment.

Cigarette smoking is common among problem drinkers and recovering alcoholics but most cessation research has not addressed this special population of smokers. Confidential survey data were collected from over 700 alcoholism counselors and medical personnel in residential and outpatient chemical dependency units (CDUs) in Nebraska to identify the quit smoking method these experts recommend and to assess their personal experiences with smoking cessation. A total of 334 respondents (45% of the group) self-identified as a recovering alcoholic, 51 (7%) as a problem drinker, and 350 (48%) as having no history of alcohol problems. Over 63% of all respondents were former or current smokers. The most frequently recommended quitting methods for people still in treatment for alcohol problems were relying on a support group (69%), adhering to Alcoholics Anonymous (AA) principles (64%), and quitting "cold turkey" (45%). In an adjusted logistic regression model, quitting "cold turkey" and relying on the principles of AA significantly increased a respondent's odds of personally becoming a successful tobacco quitter. We conclude that many recovering alcoholics and problem drinkers can successfully quit smoking and should be encouraged to use abstinence coping skills learned in alcohol treatment.

Adult↗

Risk factors for delayed immunization in a random sample of 1163 children from Oregon and Washington.

Despite extensive study of vaccine safety and decades of effort to immunize infants and toddlers, little is known about the comprehensiveness of vaccine coverage in US children younger than 2 years of age. Provider and parent data from a population-based sample of 1163 children from two states were analyzed to assess coverage rates at three ages and to evaluate characteristics of children and their families that predict failure to immunize on schedule. Overall, 78% of the children had received their first dose of diphtheria and tetanus toxoids with pertussis vaccine (DTP) and their first dose of oral poliovirus (OPV) by 92 days of age. Similarly, 77% had received their third dose of DTP and their second dose of OPV by their first birthday. However, by their second birthday only 60% had received the full series of four doses of DTP, three doses of OPV, and one dose of the measles, mumps, and rubella vaccines. When considered singly, several variables including child birth order, family income, maternal education, and marital status significantly predicted failure to immunize on schedule. In multivariate logistic models, only birth order and maternal education consistently predicted vaccine status at each of the three ages. Compared with first-born children, those who were later-born were 1.7 times more likely to be incompletely immunized at 2 years of age (95% confidence interval: 1.2, 2.3). Children of more educated mothers were significantly less likely to be underimmunized at all ages.(ABSTRACT TRUNCATED AT 250 WORDS)

Birth Order↗