Sentence examples for size of prevalence from inspiring English sources

Using an estimated IPV prevalence of 5percentt within orthopaedic clinics and standard statistical formulae for estimating sample size of prevalence studies, we have calculated that a sample size of 278 women is necessary for our study to provide an estimate of IPV prevalence with a 95percentt confidence interval between2.78percentand8.31percentrcent.

This can be seen intuitively since the size of the prevalence pool will be the incidence (I) times the average time spent in the prevalence pool (M), and the sensitivity will be the proportion of these tumours detectable at first screen.

Instead we focussed on the size of the prevalence rates and their apparent differences.

The sample size of the prevalence survey was calculated based on the following assumptions using epiInfo version 3.2.2, 2004.

These assumptions make the model estimates more conservative, as both will tend to underestimate the size of the prevalence pool.

The size of the prevalence study sample and the number of cases of CVC-ASBIs were small and it is possible that the incidence rates are not very reliable and could be overvalued.

Therefore, we merged data in two ways to decrease variability attributable to the small sample size of the prevalence figures: classes were combined across time, and districts were combined across space.

The sample size for prevalence calculations of lactating sows housed outdoors was low (n = 35-41 depending on outcome, from 16 farms).

In order to calculate the sample size, an estimate of prevalence will first be required.

For the sample size estimation 30% of prevalence of malnutrition and an expected reduction of 15% was assumed (Relative Risk = 0.5).

For the calculation of sample size, a prevalence of the metabolic syndrome in adolescents of 4% was used with a maximum absolute error of 1% and confidence level of 95%.