In addition to different CLBP definitions, variation in prevalence may be related to non-response rates, to methodological variability, to different cultural settings and to differences in prevalence over time [ 6, 20].
The different proportions in prevalence among first-time mothers and all Swedish women giving birth may not reflect the actual prevalence of prolonged labour.
In fact several discrete categories of the covariates were as different in infection prevalence as the differences described for urban versus rural surveys.
There was no significant different in the prevalence of Helicobacter pylori neither in the drug using group nor the antibiotic using group.
To the extent that school-going adolescents are different in their prevalence and factors associated with suicidal ideation, our study may not be representative of all adolescents in rural Uganda.
Alleles that allow lactose digestion in adulthood have dramatically different prevalence in different geographic areas; nearly absent in Asia, they are almost uniformly present in northern Europe (Simoons 1978).
+ Prevalence in girls different than prevalence in same age boys: Wald Chi-square, p < 0.1.
These data were generated to inform the design and implementation of a cluster-randomized, demand-creation intervention aimed at promoting couples' HCT uptake among married individuals resident in different HIV prevalence settings in Rakai district, southwestern Uganda.
Small sample sizes as well as selection biases and differing ages of ascertainment probably account for different prevalence in different populations.
