Biomedical subjects

Stephen B Hulley

Publications and source records attributed to Stephen B Hulley.

25 records · Page 2Linked to original sources

PubMed2003

Fracture and the risk of coronary events in women with heart disease.

BACKGROUND: Osteoporosis is associated with aortic calcification and cardiovascular mortality. However, whether skeletal fractures predict the risk of coronary events is unknown. METHODS: We used Cox proportional hazards models to determine whether postmenopausal fracture was associated with the risk of coronary heart disease events among the 2763 postmenopausal women with known coronary disease enrolled in the Heart and Estrogen/progestin Replacement Study. Because fractures occurred before enrollment (in 615 women) and during follow-up (in 276 women), we treated incident fracture as a time-dependent covariate in our models. RESULTS: During a mean follow-up of 4.1 years, 361 women had coronary heart disease events. The risk of these events was 25% lower in women who sustained fractures than in those without fractures (hazard ratio [HR] = 0.74; 95% confidence interval [CI]: 0.57 to 0.96; P = 0.02). This association was not confounded by physical activity or by factors associated with both fracture and coronary heart disease events (HR = 0.75; 95% CI: 0.57 to 0.98; P = 0.04). CONCLUSION: Postmenopausal women with heart disease who had skeletal fractures had a reduced risk of subsequent coronary events. This unexpected association, if confirmed in future studies, could influence risk-related treatment strategies for cardiovascular disease.

Aged↗

PubMed2003

Lipid changes on hormone therapy and coronary heart disease events in the Heart and Estrogen/progestin Replacement Study (HERS).

BACKGROUND: Despite the effect of lowering low-density lipoprotein cholesterol (LDL-C) levels and raising high-density lipoprotein cholesterol (HDL-C) levels, combination hormone therapy did not reduce the incidence of coronary heart disease (CHD) events in the Heart and Estrogen/progestin Replacement Study (HERS). To explore possible mechanisms, we examined the association between lipid changes and CHD outcomes among women assigned to hormone therapy. METHODS: HERS participants were postmenopausal women with previously diagnosed CHD who were randomly assigned to receive conjugated estrogens and medroxyprogesterone or identical placebo and then followed-up for an average of 4.1 years. Among women assigned to hormone therapy, associations between baseline-to-year-1 lipid level changes and CHD events were compared with the associations observed for baseline lipids using multivariate proportional hazards models. RESULTS: Among women assigned to hormone therapy, CHD events were independently predicted by baseline LDL-C levels (relative hazard [RH] 0.94 per 15.6 mg/dL decrease, 95% CI 0.88-1.01) and HDL-C levels (RH 0.89 per 5.4 mg/dL increase, 95% CI 0.81-0.99), but not by triglyceride levels (RH 1.01 per 13.2 mg/dL increase, 95% CI 0.97-1.06). CHD events were marginally associated with first-year reductions in LDL-C levels (RH 0.95 per 15.6 mg/dL decrease, 95% CI 0.86-1.04), and were not associated with increases in HDL-C levels ( RH 1.03 per 5.4 mg/dL increase, 95% CI 0.91-1.16) or triglyceride levels (RH 1.01 per 13.2 mg/dL increase, 95% CI 0.98-1.05). CONCLUSION: Changes in lipid levels with hormone therapy are not predictive of CHD outcomes in women with heart disease in the HERS trial.

Aged↗

PubMed2003

A randomized comparison of total or supracervical hysterectomy: surgical complications and clinical outcomes.

OBJECTIVE: To compare surgical complications and clinical outcomes after total versus supracervical abdominal hysterectomy for control of abnormal uterine bleeding, symptomatic uterine leiomyomata, or both. METHODS: We conducted a randomized intervention trial in four US clinical centers among 135 patients who had abdominal hysterectomy for symptomatic uterine leiomyomata, abnormal uterine bleeding refractory to hormonal treatment, or both. Patients were randomly assigned to receive a total or supracervical hysterectomy performed using the surgeon's customary technique. Using an intention-to-treat approach, we compared surgical complications and clinical outcomes for 2 years after randomization. RESULTS: Sixty-eight participants were assigned to supracervical hysterectomy (SCH) and 67 to total abdominal hysterectomy (TAH). Hysterectomy by either technique led to statistically significant reductions in most symptoms, including pelvic pain or pressure, back pain, urinary incontinence, and voiding dysfunction. Patients randomly assigned to (SCH) tended to have more hospital readmissions than those randomized to TAH, but this difference was not statistically significant. There were no statistically significant differences in the rate of complications, degree of symptom improvement, or activity limitation. Participants weighing more than 100 kg at study entry were twice as likely to be readmitted to the hospital during the 2-year follow-up period (relative risk [RR] 2.18, 95% confidence interval [CI] 1.06, 4.48, P=.034). CONCLUSION: We found no statistically significant differences between (SCH) and TAH in surgical complications and clinical outcomes during 2 years of follow-up.

Aged↗

PubMed2003

Positional change in blood pressure and 8-year risk of hypertension: the CARDIA Study.

OBJECTIVE: To assess the relationship between positional blood pressure change and 8-year incidence of hypertension in a biracial cohort of young adults. SUBJECTS AND METHODS: Participants from the Coronary Artery Risk Development in Young Adults (CARDIA) study with complete data from year 2 (1987-1988), year 5 (1990-1991), year 7 (1992-1993), and year 10 (1995-1996) examinations were included (N = 2781). Participants were classified into 3 groups based on their year 2 systolic blood pressure response to standing: drop, a decrease in systolic blood pressure of more than 5 mm Hg; same, a change of between -5 and +5 mm Hg; and rise, more than 5-mm Hg increase. RESULTS: The number of participants in each group was as follows: drop, 741; same, 1590; and rise, 450. The 8-year incidence of hypertension was 8.4% in the drop group, 6.8% in the same group, and 12.4% in the rise group (P < .001). Adjusted odds ratios for developing hypertension during the follow-up period in the rise group vs the same group were as follows: in black men, 2.85 (95% confidence interval [CI], 1.43-5.69), in black women, 2.47 (95% CI, 1.19-5.11), in white men, 2.17 (95% CI, 1.00-4.73), and in white women, 4.74 (95% CI, 1.11-20.30). CONCLUSIONS: A greater than 5-mm Hg increase in blood pressure on standing identified a group of young adults at increased risk of developing hypertension within 8 years. These findings support a physiologic link between sympathetic nervous system reactivity and risk of hypertension in young adults.

Adolescent↗

PubMed2002

Factor V Leiden, hormone replacement therapy, and risk of venous thromboembolic events in women with coronary disease.

Oral contraceptive use in women with factor V Leiden is associated with increased rates of venous thromboembolic events (VTEs). However, the effects of hormone replacement therapy (HRT) in postmenopausal women with factor V Leiden are not known. A nested case-control study was conducted among women with established coronary disease enrolled in 2 randomized clinical trials of HRT, the Heart and Estrogen/Progestin Replacement Study (HERS) and the Estrogen Replacement and Atherosclerosis (ERA) trial. The Leiden mutation was present in 8 (16.7%) of 48 cases with VTE compared with only 7 (6.3%) of 112 controls (odds ratio [OR](Leiden) 3.3, 95% CI 1.1 to 9.8; P=0.03). In women without the factor V Leiden mutation, risk associated with HRT use was significantly increased (OR(HRT) 3.7, 95% CI 1.4 to 9.4; P<0.01). On the other hand, in women with the factor V Leiden mutation, the estimated risk associated with HRT was increased nearly 6-fold, although the CIs were wide and included unity (OR(HRT) 5.7, 95% CI 0.6 to 53.9; P=0.13). The OR for women with the Leiden mutation who were also assigned to HRT compared with wild-type women assigned to placebo was 14.1 (95% CI 2.7 to 72.4, P=0.0015). In women with the factor V Leiden mutation who were treated with HRT, the estimated absolute incidence of VTE was 15.4 of 1000 per year compared with 2.0 of 1000 per year in women without the mutation who were taking a placebo (P=0.0015). On the basis of these data, in women with coronary disease, the estimated number needed to screen for factor V Leiden to avoid an HRT-associated VTE during 5 years of treatment is 376. If factor V Leiden genotyping becomes less expensive, it could be cost effective to screen for the presence of the mutation before instituting HRT in women with coronary disease.

Aged↗

PubMedDate not supplied

Depressive symptoms, unemployment, and loss of income: The CARDIA Study.

BACKGROUND: Previous studies have suggested an association between depression and low socioeconomic status, but few have empirically examined the effect of depressive symptoms on income and employment over time. OBJECTIVE: To determine whether depressive symptoms are associated with subsequent unemployment or loss of family income. METHODS: We performed a prospective cohort study of 5115 adults aged 18 to 30 years. These participants included approximately equal numbers of African Americans and whites and men and women from 4 cities in the United States who completed the 1990-1991 examination of the Coronary Artery Risk Development in Young Adults (CARDIA) study. For this analysis, we included 2334 participants who were employed full or part time and who reported an annual family income of $25 000 or more. Participants completed the Center for Epidemiologic Studies Depression Scale and were considered to have depressive symptoms if they scored 16 or higher on the 60-point scale. We evaluated self-reported unemployment and annual family income during 5 years of follow-up. RESULTS: Thirty-three percent (118/354) of participants with depressive symptoms (Center for Epidemiologic Studies Depression Scale score >/=16) in 1990-1991 and 21% (335/1581) of participants without substantial depressive symptoms (Center for Epidemiologic Studies Depression Scale score <16) reported new unemployment during the subsequent 5 years (odds ratio, 1.9; 95% confidence interval, 1.4-2.4; P<.001). This association remained strong after adjusting for potential confounding variables, including marital status, education, history of unemployment, current part-time (vs full-time) employment, and cigarette smoking (odds ratio, 1.6; 95% confidence interval, 1.2-2.0; P =.001). Seventeen percent (62/371) of participants with depressive symptoms and 7% (113/1631) of participants without substantial depressive symptoms in 1990-1991 reported that their family income had decreased below $25 000 by 1995-1996 (odds ratio, 2.7; 95% confidence interval, 1.9-3.8; P<.001). This association also remained strong after adjusting for potential confounding variables (odds ratio, 1.9; 95% confidence interval, 1.3-2.7; P<.001). CONCLUSIONS: Depressive symptoms are associated with subsequent unemployment and loss of family income among working young adults. Socioeconomic indicators, such as income and employment, should be considered in evaluating the potential benefits of treatment for patients with depressive symptoms.

Adolescent↗

PubMedDate not supplied

Aircraft cabin air recirculation and symptoms of the common cold.

CONTEXT: In recent years, new commercial aircraft have been designed to recirculate approximately 50% of the cabin air to increase fuel efficiency. Some older aircraft use only fresh air. Whether air recirculation increases the transmission of infectious disease is unknown; some studies have demonstrated higher rates of the common cold among persons working in buildings that recirculate air. OBJECTIVE: To evaluate the role of air recirculation as a predictor of postflight upper respiratory tract infections (URIs). DESIGN, SETTING, AND PARTICIPANTS: A natural experiment conducted among 1100 passengers departing the San Francisco Bay area in California and traveling to Denver, Colo, during January through early April 1999, and who completed a questionnaire in the boarding area and a follow-up telephone interview 5 to 7 days later. Forty-seven percent traveled aboard airplanes using 100% fresh air for ventilation, and 53% traveled aboard aircraft that recirculated cabin air. MAIN OUTCOME MEASURE: Incidence of reporting new URI symptoms within 1 week of the flight. RESULTS: Passengers on airplanes that did and did not recirculate air had similar rates of postflight respiratory symptoms. The rates of reporting a cold were 19% vs 21% (P =.34); a runny nose and a cold, 10% vs 11%, (P =.70); and an aggregation of 8 URI symptoms, 3% in both groups (P>.99). Results were similar after statistical adjustment for potential confounders. CONCLUSION: We found no evidence that aircraft cabin air recirculation increases the risk for URI symptoms in passengers traveling aboard commercial jets.

Adult↗