There is no evidence of this bias in our study, because in each population group, IV coverage increase was not consistent or systematic for the four periods between changes in the sample population (1998 to 2001, 2002 to 2005, 2006 to 2009, and 2010 to the present).
This is because human population groups worldwide are highly homogeneous (99.5% similar) genetically and their anatomical features vary in an uncorrelated fashion over the landscape.
Furthermore, we hypothesized that farmers show a higher risk than most other people, because farmers are more likely to be exposed to river water because of their lifestyles and/or because comparisons within a defined population group are less likely to be confounded.
Recruitment of volunteers to participate in the study was difficult because CSWs are a stigmatised population group.
Fractures according to baseline bone mineral density (BMD) classification: The percentage of women who developed bone fractures did not differ between those with osteoporosis and osteopenia, but because osteopenia was the larger population group, more fractures occurred among osteopenic patients.
Because population grouping did not impact on total and HMW adiponectin-blood pressure relations but the respective associations were not significant in white patients in stratified analysis (Tables 3 and 4), we further compared the extent of effect of total and HMW adiponectin on blood pressure parameters between black and white patients, in the respective models.
And also this comparison with Caucasian and other population group must be interpreted with caution because of variations in sample sizes and also differences in the population.
Police knew Mr Saunders was a member of a so-called special population group because of his long-term alcoholism and history of violent mood swings.
Miners who died from external causes and who had been employed in the gold mines for > 1 year were stratified by population group because of differences in exposure, patterns of employment, and autopsy referral patterns.
We did not include the elderly population group because they were not considered as part of the post World War II birth cohort who adapted to westernised lifestyles and manifested obesity-related health conditions.
