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The large population sample is reflected in the precision and tight confidence interval of prevalence estimates.
With an accuracy of 10% for a two-sided confidence interval of prevalence at the 95% level, 96 participants would be needed.
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We derived the median and the 95% credibility interval of prevalences based on 2,000 iterations obtained after convergence.
They calculated confidence intervals for current smoking and found no statistical differences between confidence intervals of prevalence estimates from BRFSS (20.4 to 21.0) and NHIS (20.3 to 21.6), but higher levels of prevalence reported by NHANES (21.4 to 25.9).
The 95% confidence intervals of prevalence estimates by "yes" and "no" status fell largely apart of each other in all situations shown in the table, which translates into significant differences in all instances.
The effect of treatment intervals on prevalence of polyparasitism and on helminths infection intensities was also assessed.
The participation rate for Western province was low hence this may have resulted into the wide confidence interval of the prevalence estimate.> The prevalence of symptomatic NTM increased with participant's age from 452/100,000 among those aged 15 24 years to 5160/100,000 among those aged 65 years and above.
A point and interval estimate of prevalence of FGM was described.
In addition, in principle, an interval estimation of prevalence seems necessary.
15 16 A 95% credible interval (CrI) of prevalence by year was also obtained from the Bayesian model: a 95% CrI represents the range of values within which the true prevalence is expected to lie with 95% probability.
The calculation was based on an expected prevalence of the parasite of 30 40%, the rounded limits of the confidence interval of the prevalence reported in free-ranging wild boars in Latvia [ 13].
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