Sample size for frequency in a population
Population size (for finite population correction factor) (N):
Hypothesized % frequency of outcome factor in the population (p):
Confidence limits as % of 100(absolute +/- %) (d):
Design effect (for cluster surveys):
Sample size (n) for various confidence levels
	Confidence	Level (%)	Sample size
	95%		864
	80%		370
	90%		609
	97%		1059