Then, the study subjects were selected in proportion to the size of the study population of each kebele using systematic random sampling.
These anatomists had dedicated a large proportion of their careers to the study of the bursae, and thus it was evident why Synnestvedt cited them many times.
The NESARC sample size was chosen to be sufficiently large to produce nationally representative proportions for the study of substance abuse and dependence and mental disorders by demographic group with CIs equal to or smaller than extant studies.
In some studies 31, 37, 38, 41) but not in others(40, 42) in the West, the extent of metastatic disease and, in particular, the presence of metastatic liver diseases is one of the factors that is most frequently associated with elevated serum CGA levels and in some studies in proportion to the magnitude of increase.
Such a modifying effect, if confirmed, might help to explain the apparent contradictions among results found in the literature since the strength of the relationship of the f allele to breast cancer risk seen in a given study would tend to vary according to the proportion of the study group that has a family history of breast cancer.
To simulate the DO method, the appropriate number of survey units was randomly selected from the 500 survey units according to the proportion of the study area to be surveyed.
According to the study, the proportion of overdose deaths involving heroin has tripled since 2010, while those involving prescription opioids have fallen.
According to the study, "the proportion of men with sperm counts below the threshold for subfertility or infertility is increasing" and, given the relationship between reduced sperm count and mortality, "the ongoing decline points to serious risks to male fertility and health".
Previous research suggests that women are more likely than men to use children's centres, which may explain the higher proportion of women recruited to the study [ 17].
The PERCH project is focused on pneumonia, not bronchiolitis or asthma; therefore, to optimize the proportion of children admitted to the study who have pneumonia as their underlying pathology, we introduced a filter based on the assessment strategy for wheeze recommended by WHO [ 17].
