Between October 1995 and November 1997, blood samples and census data from all individuals in nine villages along the Padamo River, Amazon Basin, Venezuela, were collected in each of two cross-sectional surveys [23].
Differences in EAGB between conservation areas and between sampling protocols (tree census vs tree inventory) were tested with a one-way ANOVA and a multiple comparisons procedure using conservation area and sampling protocol as the grouping variables.
Overall, no statistically significant difference was found between the sample and the census population in age, gender, education, residential districts, and marital status.
Indeed, variables for which we could perform valid comparisons between our sample and the census data were scanty, mainly because our sample was probabilistic at the household level only and collected data mostly at that level, while available census data are essentially based on individual characteristics.
It provides intermediate detail between counties and census blocks.
Researchers using other health and non-health-based populations could also consider using Census data to identify, exclude, and adjust for differences between study and Census populations.
Differences between the sample and the 2001 census population data were small.
The variability of wood density across Costa Rica can be illustrated by differences found in wood density between conservation areas, NFMPs, and the different sampling protocols (census and inventory).
The comparability of the structures of gender, age group and education level between the sample and the 2011 national census data and the consistency between the crude prevalence and the age- and gender-adjusted prevalence indicate that the participants were a good nationally representative random sample of urban Chinese.
All results were adjusted for cluster sampling and weighted according to census data.
