Considering resources, the sample size was estimated using a single proportion sample size formulae by considering the following parameters: prevalence of TB among adult pulmonary TB suspects of 29% [6], 95% CI, and 4% of margin of error and 10% for the non-response rate.
The sample size was determined by using a single population proportion formula which took the following assumptions in to consideration: the proportion of mothers who entered in to ANC timely 40.2% [ 16], 5% level of significance (α = 0.05) and 5% margin of error (ω = 0.05).
The sample size was calculated by using a single population proportion formula to estimate with a 0.05 margin of error and a 50% proportion of event occurrence with a 10% nonresponse rate.
The sample size was determined by using single proportion for finite population with 95% confidence interval, marginal error (d) of 5% and the prevalence (P) of 50% and considering 10% non-response rate to be 258.
The sample size for this study was calculated by using single proportion formula at 95% confidence interval (CI) level (Z (1-ά/2) = 1.96), an expected prevalence of 50% since there was no study conducted regarding this topic in the area and 5% marginal error.
The sample size was determined by using single proportion formula (n = [Z α / 2] P (1-p] / d) at 95% confidence interval, where, Z α / 2 = 1.96, P = prevalence of 50% was taken since there is no similar study in the study area and d = 5% of marginal error was taken.
The sample size was determined by using a single population proportion formula.
The sample size was determined by using a single population proportion formula which took the following assumptions in to consideration: magnitude of institutional delivery service utilization 7%, [ 7] (p = 0.07); 5% level of significance (α = 0.05); 2.5% marginal error (d = 0.025).
The sample size was determined by using a single population proportion formula considering the following assumptions: magnitude of intention for institutional delivery 50%, (p = 0.5), 5% level of significance (α = 0.05).
Since the total population in the campus was 2,900, adjustment was made by the following formula nf = ni/[1 + (ni/N ]; where nf is the sample size calculated by adjustment, ni is the initial sample size calculated by single proportion formula (384), N is the total number of students in the campus (2,900).
