Quality of stroke prevention in general practice: relationship with practice organization.

OBJECTIVE: To investigate the relationship between elements of practice organization related to stroke prevention in general practice, and suboptimal preventive care preceding the occurrence of stroke. DESIGN: This study was conducted among 69 Dutch general practitioners in the Rotterdam region. Information on the implementation of elements of practice organization related to stroke prevention was collected by postal questionnaire. Data on the process of patient care were collected by means of chart review and interviews with general practitioners. Cases of stroke (n = 186) were retrospectively audited by an expert panel with guideline-based review criteria. Using logistic regression analysis we investigated the relationship between the probability of suboptimal care delivery and the presence of specific elements of practice organization related to stroke prevention (tailored information systems, formal delegation of preventive tasks, standardization of care). RESULTS: For some elements of practice organization significant relationships with the quality of stroke prevention were found. Suboptimal care was less common among general practitioners with a higher level of noting high risk patients in the patient records (odds ratio 0.30; 95% CI 0.13-0.69, P = 0.01), delegating follow-up visits to support staff (odds ratio 0.42; 95% CI 0.22-0.82, P = 0.01) and compliance with the hypertension guideline (odds ratio 0.57; 95% CI 0.41-0.78, P = <0.001). Except for practice type (general practitioners in health centres less often provided suboptimal care, P = 0.02), no significant relationships with general practitioner and practice characteristics were found. CONCLUSION: This study shows that general practitioners with a higher level of integrated organizational structures for stroke prevention (record keeping, formal delegation of preventive tasks, guideline compliance) are less likely to deliver suboptimal care.

Relation between nocturnal voiding frequency and nocturnal urine production in older men:a population-based study.

OBJECTIVES: To describe the normal values for nocturnal urine production and its determinants, as well as the relation between nocturnal urine production and voiding frequency. METHODS: Data were collected from 1688 men aged 50 to 78 years without bladder or prostate cancer, radical prostatectomy, neurogenic bladder dysfunction, or negative advice from their general practitioner. Measurements included self-administered questionnaires, a 3-day frequency-volume chart, transrectal ultrasonography of the prostate, uroflowmetry, and postvoid residual urine volume measurement. The mean nocturnal urine production was computed from the frequency-volume charts. Linear regression analyses were performed to determine associated factors for nocturnal urine production. Areas under the receiver operating characteristic curves were used to describe the discriminative value of nocturnal urine production on nocturnal voiding frequency. A cutoff value for "increased" nocturnal urine production was defined using logistic regression analysis. RESULTS: The nocturnal urine production was 60.6 mL/hr for the total study population; it increased with age and was significantly higher in men with 24-hour polyuria. Nocturnal urine production was on average higher in men with increased nocturnal voiding frequency, but had only a reasonable discriminative value on nocturnal voiding frequency (areas under receiver operating characteristic curve of 0.71 and 0.76). Nocturnal urine production exceeding 90 mL/hr is suggested as abnormal. CONCLUSIONS: On average, nocturnal voiding frequency is indicative of nocturnal urine production. However, nocturnal urine production is only a modest discriminator for increased nocturnal voiding frequency. Therefore, the use of nocturnal urine production as an explanatory variable for nocturnal voiding frequency in daily practice is of little value.