Exact(13)
Using the following parameters: and an assumed prevalence of TF/TI of 20% for both districts, with the lowest expected rate being 16%, a significance level of 5%, [confidence of 95%], and a design effect of 4, the number of children aged 1 9 years and adults aged 15 years and above required for this study was 1728 children and 1414 adults per district and these were sampled concurrently.
The assumed prevalence rate of NPS in primary care is 60% [ 16, 17].
In arriving at the sample size, an assumed prevalence rate of 50% was used since there was no record of any study on MS in the country.
We selected a 95% confidence level and an assumed prevalence of supplement use of 50%, informed by other studies [ 15- 19, 22], due to the lack of prior data in our region.
Based on sample size calculations, a sample of 190 patients was needed to estimate CAM use prevalence among breast cancer patients, assuming a 95%% confidence interval, a 5%% margin of error, and an assumed prevalence of CAM use of 15%%.
Taking the above values for FN and TN, and the assumption that FP=0, this means that the assumed prevalence of metastasis in this study cannot fall below 2.3% (6/259).
Similar(46)
Outliers were identified with robust linear regression (ROBUSTREG, SAS) assuming prevalence in treatment-failing patients as fixed and independent.
A minimum sample size of 322 adolescents was required assuming prevalence of DE of 30%% [ 42, 43], precision and level of statistical signification of 0.05.
This is a theoretical statistic definition that assumes prevalence of 5% for all disorders and might not be suitable for all epidemiologic or clinical settings [ 23].
Assuming prevalence of institutional births as 33% in urban slums of Delhi, 16 we need to interview 780 women who gave birth in the past year to obtain prevalence estimates with 10% relative precision.
For the remaining (thirteen) attributes for which individual linked data were not available, annual consultation times for each competency were simply multiplied by the estimated prevalence, assuming prevalence consistent with the best Australian or international evidence.
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