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Biomedical subjects

M A Dew

Publications and source records attributed to M A Dew.

At least 109 records · Page 6Linked to original sources
PubMed1989

Effectiveness of the United Steel Workers of America Coke Oven Intervention Program.

This paper describes the implementation and evaluation of the Coke Oven Intervention Program developed jointly by the United Steel Workers of America and the University of Pittsburgh. The program was offered on four occasions at each of seven coke oven plants over a 2-year period. Participants were compared with nonparticipating co-workers and controls from matched plants on knowledge of the Coke Oven Standard and workplace behaviors. Few baseline differences were found among participants, nonparticipants, and controls. Participants improved significantly as a result of the program, with those attending multiple programs accruing the greatest benefits. Panel controls interviewed on six occasions throughout the 2-year period showed little improvement. Reasons for and implications of the effectiveness of the program are discussed.

Adult↗
PubMed1988

Husbands' layoff and wives' mental health. A prospective analysis.

We performed a prospective study focused on the short-term and long-term mental health effects of husbands' layoff on wives. A sample of 149 mothers of young children, approximately half of whose husbands became unemployed due to layoff during the two-year study period, was examined. We hypothesized that husbands' layoff would cause elevations in psychiatric symptoms and that women with particular risk factors would be more vulnerable to the impact of this event. The effects of the following eight risk factors, measured before husbands' layoff, were examined: psychiatric history, familial psychiatric history, three or more children in the home, lack of employment outside the home, financial difficulties, low marital satisfaction, low social support from relatives, and low social support from friends. Although husbands' layoff did not have short-term effects on wives' symptoms, their levels of distress were elevated by the end of the study period. In addition, three risk factors--familial psychiatric history, financial difficulties, and low social support from relatives--significantly increased women's vulnerability to long-term psychological distress following their husbands' layoff.

Adult↗
PubMed1987

A comparative analysis of two community stressors' long-term mental health effects.

The investigation directly compared the long-term mental health consequences of two community-wide stressors, the Three Mile Island (TMI) nuclear accident and widespread unemployment due to layoff, in demographically comparable samples of women. Results showed a marked degree of similarity in the stressors' effects: Levels of subclinical symptomatology were elevated to similar degrees in each sample during the year following stressor onset, and symptom levels remained elevated in each sample 2 to 3 1/2 years later. Moreover, variables identified as predictors of enduring psychological distress were virtually identical for the two samples. Additional analyses revealed that the mental health status of unemployed husbands mediated the negative psychological effects of layoff on their wives. Implications of these results for understanding the long-term consequences of exposure to community-wide stress are discussed.

Accidents↗
PubMed1987

Occupational lead exposure and blood pressure.

Recent community studies have suggested that low level lead exposure is significantly associated with blood pressure in the general population. This finding is inconsistent with the results of recent occupational studies of lead exposed workers, although the occupational studies contained serious methodological weaknesses. The present study examined the relation between occupational lead exposure and diastolic and systolic blood pressure in randomly selected samples of 270 exposed and 158 non-exposed workers. Four exposure indicators were examined: employment at a lead battery plant nu a control plant, current blood lead value, current zinc protoporphyrin value, and time weighted average blood lead value. After controlling for other known risk factors such as age, education, income, cigarette usage, alcohol consumption, and exercise, the associations between exposure and blood pressure were small and non-significant. In the absence of a biologically feasible hypothesis regarding the mechanism by which low level lead exposure would influence blood pressure the present findings challenge the validity of the general population association.

Adolescent↗
PubMed1987

Mental health effects of the Three Mile Island nuclear reactor restart.

Controversy over potential mental health effects of the Three Mile Island Unit-1 restart led the authors to examine prospectively the pattern of psychiatric symptoms in a sample of Three Mile Island area mothers of young children. Symptom levels after restart were elevated over previous levels; a sizable subcohort of the sample reported relatively serious degrees of postrestart distress. History of diagnosable major depression and generalized anxiety following the Three Mile Island accident, plus symptoms and beliefs about personal risk prior to the restart, best predicted postrestart symptoms.

Accidents↗
PubMed1986

Long-term reliability of diagnosing lifetime major depression in a community sample.

Limited information is available on the reliability of diagnostic assessments in community populations. This study analyzed the 18-month test-retest stability of lifetime major depression determined from the Schedule for Affective Disorders and Schizophrenia-Lifetime Version using the Research Diagnostic Criteria. Overall, the reliability among the 391 female subjects was poor. Clinical status during the 18-month interval influenced reliability, while demographic, psychosocial, and interviewer characteristics were unrelated. The women who reliably reported lifetime episodes of depression were consistent about details such as medication use, but were inconsistent about other features, eg, number of episodes, length of longest episode, and age at first episode. The results suggest the need for caution in analyzing data on the lifetime prevalence of depression in community samples.

Adult↗
PubMedDate not supplied

Effect of continuation treatment on residual symptoms in late-life depression: how well is "well"?

UNLABELLED: The objectives of this report were (1) to describe residual depressive symptoms in elderly patients during continuation therapy with combined nortriptyline and interpersonal psychotherapy; (2) to determine which symptoms were persistent; (3) to determine the clinical correlates of residual depressive symptoms; and (4) to document distinct response pattern clusters during combined continuation therapy. METHOD: Box plot analyses of Hamilton depression scores and Global Assessment Scale scores, repeated twice monthly over 4 months, were conducted using data from 105 elderly depressives. Temporal trends in the data were examined via random regression analysis. Individual trajectories for each of the 105 patients were examined for patterns of response during continuation therapy. RESULTS: We observed a low mean Hamilton rating of 7 (SD = 2.3) at the start of continuation therapy and 5 (SD = 3.0) at the end. Both Hamilton and GAS scores showed modest but significant improvement over time. Hamilton variability was most apparent in symptoms of mood lowering, apathy, anxiety (psychological and somatic), feelings of guilt, anergia, insomnia, and loss of libido; other symptoms (retardation, agitation, hypochondriasis, loss of appetite, loss of weight, suicidal ideation, and loss of insight) showed clear resolution. A diagnosis of RDC situational depression was associated with higher levels of residual symptoms, while level of chronic medical burden, personality dysfunction, and social support were not. Examination of response patterns showed that a quarter of patients experienced one or more brief symptomatic exacerbations. CONCLUSION: On average, an excellent level of symptom resolution was achieved for most patients with Hamilton scores comparable to those seen in healthy elderly controls. These data support a position of therapeutic optimism in late-life depression and underscore full remission as an achievable therapeutic goal.

Aged↗
PubMedDate not supplied

Factors affecting help-seeking during depression in a community sample.

Little is known about factors that influence community residents to seek professional help while experiencing diagnosable episodes of depression. The present study utilized longitudinal data from 96 female subjects to examine whether clinical and psychosocial features of a recent depressive episode, as well as preexisting psychiatric and psychosocial characteristics, could distinguish between individuals who (a) did and did not seek help during their episode and (b) chose to consult one professional source rather than another. Results showed that less than half of the sample sought professional help. Few variables could distinguish subjects who sought help from those who did not. Instead, subjects consulting mental health specialists were more clinically impaired and had fewer psychosocial assets than both those consulting nonpsychiatric physicians and those seeking no help. Subjects in the latter two groups were indistinguishable from one another on the assessed variables. Results were cross-validated with a smaller sample of male community residents.

Adult↗
PubMedDate not supplied

Alcohol consumption as a cofactor in the progression of HIV infection and AIDS.

Alcohol consumption as a cofactor in the progression of HIV infection was examined in 1,446 homosexual and bisexual HIV + men enrolled in the Multicenter AIDS Cohort Study who had a minimum of three visits. Two measures of drinking were employed: initial level, and pattern during the study period. Outcome measures included AIDS-related symptoms and AIDS diagnosis. Level of drinking at entry to the study was not significantly associated with either AIDS-related symptoms at final visit or with AIDS diagnosis. However, men who decreased drinking were more likely to report thrush, fatigue, weight loss, and diarrhea at their final visit. Most likely, these men decreased drinking as a result of failing health, not because their drinking pattern influenced symptom onset. These data support earlier reports that found no relationship between alcohol consumption and progression to AIDS.

Acquired Immunodeficiency Syndrome↗
PubMedDate not supplied

Accounting for covariate measurement error in a Cox model analysis of recurrence of depression.

When a covariate measured with error is used as a predictor in a survival analysis using the Cox model, the parameter estimate is usually biased. In clinical research, covariates measured without error such as treatment procedure or sex are often used in conjunction with a covariate measured with error. In a randomized clinical trial of two types of treatments, we account for the measurement error in the covariate, log-transformed total rapid eye movement (REM) activity counts, in a Cox model analysis of the time to recurrence of major depression in an elderly population. Regression calibration and two variants of a likelihood-based approach are used to account for measurement error. The likelihood-based approach is extended to account for the correlation between replicate measures of the covariate. Using the replicate data decreases the standard error of the parameter estimate for log(total REM) counts while maintaining the bias reduction of the estimate. We conclude that covariate measurement error and the correlation between replicates can affect results in a Cox model analysis and should be accounted for. In the depression data, these methods render comparable results that have less bias than the results when measurement error is ignored.

Aged↗
PubMedDate not supplied

Psychological symptom levels and their correlates in lung and heart-lung transplant recipients.

This study examined depression, anxiety, and anger-hostility symptom levels, as well as overall quality of life, in a cohort of 50 lung and heart-lung transplant recipients. Only the subjects' mean anxiety symptoms were substantially elevated over normative levels. However, nearly half of the sample showed clinically significant distress in one or more of the three symptom areas. Pretransplant psychiatric history, educational level, posttransplant caregiver support, and health concerns were the most important independent correlates of the recipients' psychological outcome. Low sense of mastery and poorer physical functional status also showed some evidence of association with mental health.

Adult↗
PubMedDate not supplied

PTSD in heart transplant recipients and their primary family caregivers.

Posttraumatic stress disorder associated with transplantation (PTSD-T) is a complication for some heart transplant recipients. By using a structured, standardized interview and DSM-III-R criteria, the authors examined whether recipients (n = 158) and their family caregivers (n = 142) showed similar PTSD-T rates and clinical characteristics during the first year posttransplant. Among the recipients, 10.5% met full criteria for the disorder and an additional 5% were probable cases. Among the caregivers, 7.7% met full criteria and an additional 11.0% were probable cases. Severity and duration of disorder were similar across the groups. Being female, having a history of psychiatric illness, and having lower friend support were increased risks for PTSD-T.

Adult↗
PubMedDate not supplied

Quality of life outcomes in left ventricular assist system inpatients and outpatients.

This study empirically evaluates the quality of life (QOL) effects associated with hospital discharge among heart transplant candidates whose lives are maintained by left ventricular support systems (LVAS). Thirty-five LVAS inpatients (18 Novacor, 17 Thoratec) received structured QOL assessments approximately 1 month after device implant. Ten of the patients (8 Novacor, 2 Thoratec) were subsequently discharged to either home or a home-like outpatient facility where their QOL was reassessed. The QOL of LVAS patients, before and after discharge, was compared with that of demographically similar nonhospitalized heart transplant candidates (n = 55) and recipients (n = 97). Their caregivers' QOL was also assessed. The QOL of LVAS outpatients showed statistically significant (p<0.05) advantages over remaining LVAS inpatients and nonhospitalized heart candidates. Advantages appeared in physical, emotional, and social functioning domains. The QOL of LVAS outpatients also improved (p<0.05) over their own QOL before discharge, with the greatest change in physical functional and emotional status. The QOL of LVAS outpatients most closely resembled QOL in the transplant recipients. Family caregivers to LVAS outpatients reported some increases in caregiving burden after patient discharge, but their overall well being was not adversely affected. These data provide an empiric basis for the provision of outpatient programs as appropriate care for eligible LVAS patients.

Activities of Daily Living↗
PubMedDate not supplied

Human factors issues in ventricular assist device recipients and their family caregivers.

Ultimately, for ventricular assist devices (VADs) to be acceptable as permanent alternatives to heart transplantation, patients' and their families' satisfaction with specific features and risks of VADs must be addressed. Of 42 eligible patients who received VADs between February of 1996 and December of 1998, we interviewed 37 patients (17 Novacor, 18 Thoratec, 2 with both devices) and 20 of their primary family caregivers about device related concerns and reactions. Demographic and health related correlates of respondents' concerns were examined. Eleven patients discharged from the hospital with the VAD in place were then reinterviewed 1 month after discharge. At baseline, patients' general perceptions of the VAD were positive, although 22-52% reported specific concerns, including most often worry about infection (52%), difficulty sleeping due to the position of the driveline (52%), pain at the driveline exit site (46%), worry about device malfunction (40%), and being bothered during the day by device noise (32%). The prevalence of most concerns rose with duration of VAD support. Caregivers' perceptions did not differ significantly from patients' perceptions. Outpatients were somewhat more concerned than inpatients about device noise and risk of stroke, but were markedly less concerned about infection. Across all patients, higher levels of device related concerns were correlated with more physical functional limitations and more psychological distress, and reduced quality of life. Demographic characteristics and device type were not uniformly related to device concerns.

Activities of Daily Living↗
PubMedDate not supplied

Alcohol use following liver transplantation: a comparison of follow-up methods.

Alcoholic cirrhosis is one of the most common indications for liver transplantation. Previous researchers have studied rates of return to drinking following transplantation, however, few have employed prospective measures of alcohol use. The authors prospectively studied the alcohol use of patients transplanted for alcoholic liver disease. The authors improved the accuracy of monitoring alcohol use by using various methods for tracking patient's alcohol consumption, and we report on the time to first alcohol use after transplantation comparing these different methods. The authors found that alcohol use can occur very early after transplantation, even within the first 3 months posttransplant. Thirty-eight percent of the patients consumed any alcohol after transplantation. The clinical interviews by the psychiatrist were the most successful method for identifying posttransplant alcohol use. Posttransplant alcohol use was significantly associated with prior nonalcohol substance use (P < 0.025), family history of alcoholism in a first-degree relative (P < 0.025), and prior alcohol rehabilitation experience (P < 0.05) but not with a prior psychiatric history or less than 6 months of pretransplant sobriety. The authors indicate that prospective monitoring, using a combination of methods, is the most accurate approach to identify alcohol consumption. With this type of accuracy, risk factors can be identified and alcohol use can be compared with alcohol-related morbidity posttransplant.

Adult↗
PubMedDate not supplied

Prevalence and risk of depression and anxiety-related disorders during the first three years after heart transplantation.

Although poor psychological adjustment to organ transplantation appears to be a major contributor to reduced quality of life and increased physical morbidity, the prevalence and risk factors for psychiatric disorder have not been considered beyond the first 12-18 months after transplantation. The authors enrolled a representative sample of 191 heart transplant recipients in a prospective examination of the prevalence, clinical characteristics, and risk factors for DSM-III-R major depressive disorder (MDD), generalized anxiety disorder (GAD), associated adjustment disorders, and posttraumatic stress disorder related to transplant (PTSD-T) during the 3 years postsurgery. Survival analysis indicates that cumulative risks for disorder onset were MDD, 25.5%; adjustment disorders, 20.8% (17.7% with anxious mood); PTSD-T, 17.0%; and any assessed disorder, 38.3%. There was only one case of GAD. PTSD-T onset was limited almost exclusively to the first year posttransplant. Episodes of MDD (but not anxiety disorders) that occurred later posttransplant (8 to 36 months postsurgery) were more likely than early posttransplant episodes to be treated with psychotropic medications. For both MDD and anxiety disorders, later episodes were less likely to be precipitated by transplant-related stressors than other life stressors. Factors increasing cumulative risk for psychiatric disorder posttransplant included pretransplant psychiatric history, female gender, longer hospitalization, more impaired physical functional status, and lower social supports from caregiver and family in the perioperative period. Risk factors' effects were additive; the presence of an increasing number of risk factors bore a dose-response relationship to cumulative risk of disorder.

Adolescent↗