For most infections, calculation of the population-attributable fraction (PAF) relies on the classic formula for population-attributable risk (Cole and Macmahon, 1971): where r represents the relative risk of exposure, and p its prevalence in the population.
Considering a population of 42,817 elderly people (IBGE 2011), the formula for finite populations was used: n = σ2.
This sample was calculated using a formula for finite populations.
Annual census size (Na) for razorback sucker in Lake Mohave, defined as the number of reproductively capable adult individuals (fish that have been at large for at least 1 year postrelease and thus have grown to sexual maturity) was evaluated using the single census modified Peterson formula for closed populations (Ricker 1975).
A sample size of 422 was determined using the formula for single population proportion based on the assumption s: in the absence of the previous prevalence data on the population under study, and to obtain the maximum sample size, p was assumed to be 0.5.
In particular, we propose an appropriate fitness function based on an averaged BER formula for the population-based stochastic optimization algorithm to find the optimal beamforming coefficients.
Techno-economic calculations that examine calcium looping must take into account this decay in capacity, and this has to date been accomplished using a formula for the population distribution of particles in the cycling system.
We developed a more general formula for the population distribution of solid particles in processes involving recirculations, and compared it with the widely used equation in the calculation of several process metrics.
Material and method: A cross-sectional and descriptive study was done on 150 patients diabetic type 2. There were included all of them that have more than 5 years of evolution on the diabetes type 2, the sample was calculated with the averages formula for finite population and the selection was simple random.
The estimated sample size yielded 400 males and 650 females based on the standard formula for the population proportion [ 39].
