Misclassification Rates in Hypertension Diagnosis due to Measurement Errors
نویسندگان
چکیده
منابع مشابه
Differential misclassification arising from nondifferential errors in exposure measurement.
Misclassification into exposure categories formed from a continuous variable arises from measurement error in the continuous variable. Examples and mathematical results are presented to show that if the measurement error is nondifferential (independent of disease status), the resulting misclassification will often be differential, even in cohort studies. The degree and direction of differential...
متن کاملUnderestimation of risk due to exposure misclassification.
Exposure misclassification constitutes a major obstacle when developing dose-response relationships for risk assessment. A non-differentional error results in underestimation of the risk. If the degree of misclassification is known, adjustment may be achieved by sensitivity analysis. The purpose of this study was to examine the full magnitude of measurement error in determining the prenatal exp...
متن کاملBias due to misclassification in the estimation of relative risk.
Lack of bias in the estimation of relative effect in epidemiologic studies depends on the internal validity of the study. This paper conveys in graphic and tabular form the direction and magnitude of bias due to misclassification of study subjects. A series of computer-generated graphs shows that the departure of the estimate of effect (relative risk or odds ratio) from its true value is a func...
متن کاملCorrection of misclassification error in disability rates.
This paper examines misclassification error in survey estimates of disability. The results suggest that a significant number of those with a disability fail to be recorded as such in the British Household Panel Survey. In addition, the probability of a false positive is estimated as being very close to zero in all socio-demographic groups. There is a strong bias in estimates of differences in r...
متن کاملDiagnosis of Hypertension Due to Renal Arterial Stenosis.
N 1962, we 1 published a report on the value of the comparative Usodium/Ucreatinine ratio in the diagnosis of hypertension due to renal arterial stenosis. This ratio is defined as the proportional relation between the concentration of sodium and creatinine (U5Odiu./Ucreatinine) in the urine issuing simultaneously from each ureter. We also suggested that routine performance of dehydrated-hydrate...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: SIAM Undergraduate Research Online
سال: 2009
ISSN: 2327-7807
DOI: 10.1137/08s010311