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Effect of physician characteristics and knowledge on the quality of dyslipidemia management and LDL-C target goal achievement in China: Subgroup analysis of the Dyslipidemia International Study.
Ding, R, Ye, P, Zhao, S, Zhao, D, Yan, X, Dong, Y, Li, J, Ran, Y, Hu, D, ,
Journal of global health. 2017;(2):020702
Abstract
OBJECTIVE This study aimed to investigate the effect of physicians' characteristics and knowledge of LDL-C target goals on the quality of lipid management in China. METHODS A total of 25 317 dyslipidemia patients who had taken lipid-lowering medication for >3 months were enrolled in our study. Patients' demographic data, medical history, lipid profile, their physician's specialty and professional title and their hospital level as well as their LDL-C goal opinions were recorded. RESULTS Questionnaires were completed by 926 physicians with 6 different specialties and 4 professional statuses, in 3 different-level hospitals. Most (74.5%) of the physicians recognized the importance of considering LDL-C serum concentration for treating dyslipidemia, and set target LDL-C goals according to the 2007 Chinese guidelines for 83.4% of their patients. The LDL-C goal achievement rate was significantly higher for patients whose physicians' knowledge of LDL-C target goals was consistent with guideline recommendations, compared with those whose physicians' knowledge was inconsistent with the guidelines (60.4% vs 31.1%, P < 0.0001). Physicians working in tier 1 (odds ration (OR) = 2.95; 95% CI 2.37-3.67), (OR = 1.56; 95% CI 1.34-1.81) and tier 2 (OR = 2.53; 95% CI 2.22-2.88), (OR = 1.16; 95% CI 1.06-1.27) hospitals, specialized in neurology (OR = 1.13; 95% CI 0.93-1.36), (OR = 1.57; 95% CI 1.40-1.77), internal medicine (OR = 1.07; 95% CI 0.90-1.27), (OR = 1.58; 95% CI 1.39-1.80), endocrinology (OR = 1.02; 95% CI 0.87-1.21), (OR = 1.63; 95% CI 1.47-1.82) and being a resident vs attending physician (OR = 1.05; 95% CI 0.92-1.20), (OR = 1.00; 95% CI 1.00-1.19) were independent risk factors for low knowledge of LDL-C target goals and low LDL-C goal achievement. CONCLUSION Chinese physicians' characteristics and knowledge of LDL-C target goals were associated with patients' LDL-C goal achievement.
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Variability of panretinal photocoagulation lesions across physicians and patients. Quantification of diameter and intensity variation.
Saeger, M, Heckmann, J, Purtskhvanidze, K, Caliebe, A, Roider, J, Koinzer, S
Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie. 2017;(1):49-59
Abstract
BACKGROUND Photocoagulation lesion intensity relies on the judgement of retinal blanching. Lesions turn out variable due to observer-dependent judgement and time dependency of blanching. We investigated lesion variability per patient and per physician in clinical routine treatments. METHODS In this observational clinical trial, different physicians performed panretinal photocoagulation for diabetic retinopathy. Study eyes received 20-30 study lesions at 20 ms (three physicians, nine eyes) and 200 ms (four physicians, 12 eyes) irradiation time (532 nm continuous wave photocoagulator, 300 μm spot size). Lesions were imaged after 1 hour with photography and optical coherence tomography (OCT). We measured lesion diameters in fundus and OCT images, and graded intensities according to a previously published six-step classifier. RESULTS 200-ms lesions were larger and more severe (568, 474-625 μm [median, IQR], predominantly class 6) than 20-ms lesions (397, 347-459 μm, predominantly classes 3-4). The impact of laser power was small compared to other factors. Lesion intensities and diameters in fundus and OCT images varied significantly between patients and between physicians. Median photographic lesion diameters varied by up to a factor of 1.61 (20 ms) or 1.5 (200 ms) respectively. CONCLUSIONS In this study, the treated area of retina varied by up to a factor of 1.612 = 2.59 for a given spot number. As clinical efficacy depends on the treated area, which is a function of lesion number by area per lesion, our results implicate poor control of the overall treatment effect if treatments are administered according to lesion number or spacing alone. Better ways of laser effect control should be sought.
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Chocolate consumption and risk of heart failure in the Physicians' Health Study.
Petrone, AB, Gaziano, JM, Djoussé, L
European journal of heart failure. 2014;(12):1372-6
Abstract
AIMS: To test the hypothesis that chocolate consumption is associated with a lower risk of heart failure (HF). METHODS AND RESULTS We prospectively studied 20 278 men from the Physicians' Health Study. Chocolate consumption was assessed between 1999 and 2002 via a self-administered food frequency questionnaire and HF was ascertained through annual follow-up questionnaires with validation in a subsample. We used Cox regression to estimate multivariable adjusted relative risk of HF. During a mean follow-up of 9.3 years there were 876 new cases of HF. The mean age at baseline was 66.4 ± 9.2 years. Hazard ratios [95% confidence intervals (CI)] for HF were 1.0 (ref), 0.86 (0.72-1.03), 0.80 (0.66-0.98), 0.92 (0.74-1.13), and 0.82 (0.63-1.07), for chocolate consumption of less than 1/month, 1-3/week, 2-4/week, and 5+/week, respectively, after adjusting for age, body mass index (BMI), smoking, alcohol, exercise, energy intake, and history of atrial fibrillation (P for quadratic trend = 0.62). In a secondary analysis, chocolate consumption was inversely associated with risk of HF in men whose BMI was <25 kg/m(2) [HR (95% CI) = 0.59 (0.37-0.94) for consumption of 5+ servings/week, P for linear trend = 0.03) but not in those with BMI of 25+ kg/m(2) [HR (95% CI) = 1.01 (0.73-1.39), P for linear trend = 0.42, P for interaction = 0.17). CONCLUSIONS Our data suggest that moderate consumption of chocolate might be associated with a lower risk of HF in male physicians.
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Sleep duration and risk of atrial fibrillation (from the Physicians' Health Study).
Khawaja, O, Sarwar, A, Albert, CM, Gaziano, JM, Djoussé, L
The American journal of cardiology. 2013;(4):547-51
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Abstract
Although sleep quality and duration have been related to cardiovascular end points, little is known about the association between sleep duration and incident atrial fibrillation (AF). Hence, we prospectively examined the association between sleep duration and incident AF in a cohort of 18,755 United States male physicians. Self-reported sleep duration was ascertained during a 2002 annual follow-up questionnaire. Incident AF was ascertained through annual follow-up questionnaires. Cox regression analysis was used to estimate the relative risks of AF. The average age at baseline was 67.7 ± 8.6 years. During a mean follow-up of 6.9 ± 2.1 years, 1,468 cases of AF occurred. Using 7 hours of sleep as the reference group, the multivariate adjusted hazard ratio for AF was 1.06 (95% confidence interval 0.92 to 1.22), 1.0 (reference), and 1.13 (95% confidence interval 1.00 to 1.27) from the lowest to greatest category of sleep duration (p for trend = 0.26), respectively. In a secondary analysis, no evidence was seen of effect modification by adiposity (p for interaction = 0.69); however, prevalent sleep apnea modified the relation of sleep duration with AF (p for interaction = 0.01). From the greatest to the lowest category of sleep duration, the multivariate-adjusted hazard ratio for AF was 2.26 (95% confidence interval 1.26 to 4.05), 1.0 (reference), and 1.34 (95% confidence interval 0.73 to 2.46) for those with prevalent sleep apnea and 1.01 (95% confidence interval 0.87 to 1.16), 1.0 (reference), and 1.12 (95% confidence interval 0.99 to 1.27) for those without sleep apnea, respectively. Our data showed a modestly elevated risk of AF with long sleep duration among United States male physicians. Furthermore, a shorter sleep duration was associated with a greater risk of AF in those with prevalent sleep apnea.
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A prospective study of physical activity and risk of prostate cancer in US physicians.
Liu, S, Lee, IM, Linson, P, Ajani, U, Buring, JE, Hennekens, CH
International journal of epidemiology. 2000;(1):29-35
Abstract
BACKGROUND Exercise can suppress androgen production and may thus decrease the risk of prostate cancer. However, findings from epidemiological studies assessing physical activity and risk of prostate cancer are inconsistent. METHODS We prospectively examined the association between physical activity and prostate cancer risk in the Physicians' Health Study (PHS), a randomized trial of low-dose aspirin and beta-carotene among 22,071 men aged 40-84 without self-reported myocardial infarction, stroke and cancer. At baseline in 1982, men were asked about the frequency of exercise vigorous enough to work up a sweat. Physical activity was assessed in a similar fashion again at 36 months of follow-up. RESULTS During 11.1 years of follow-up (258 779 person-years), 982 cases of prostate cancer occurred and were confirmed by medical record review. After adjustment for potential confounding factors (including age, height, randomized treatment assignment, smoking status, alcohol intake, use of multivitamins, history of diabetes, history of hypertension and history of high cholesterol), the relative risks for prostate cancer associated with exercise vigorous enough to work up a sweat were 1.0 (referent) for frequency less than once per week, 1.02 (95% CI: 0.82-1.26) for once per week, 1.07 (95% CI: 0.90-1.27) for 2-4 times per week, and 1.11 (95% CI: 0.90-1.36) for 5+ times per week. Across all subgroups of men categorized by age, body mass index, smoking status, alcohol intake, use of multivitamins, history of diabetes, history of hypertension and history of high cholesterol, there were no significant associations between frequency of exercise vigorous enough to work up a sweat and prostate cancer risk. After excluding cases of prostate cancer that occurred during the first 36 months of follow-up, again, there was no significant association. Combining physical activity assessments at baseline and at 36 months also yielded no significant association with prostate cancer risk. CONCLUSIONS These observational data from the Physicians' Health Study do not support the hypothesis that increased physical activity reduces the risk of prostate cancer.