Sentence examples for based on internal comparisons from inspiring English sources
However, this does not undermine its suitability for research based on internal comparisons within the cohort and longitudinal analyses.
Moreover, conclusions were drawn based on internal comparisons within the study population only, thus internal validity was assured.
A further source of bias, possibly affecting the decrease in risk with increasing duration of working underground based on internal comparisons, could be the healthy worker survivor effect.
Discussions around epidemiological methods often conclude that representativeness is not necessarily required for reliable estimates of relative risk based on internal comparisons within study populations [ 4].
They provide empirical support for the basic epidemiological principle that results based on internal comparisons remain generalisable even when study subjects are drawn from a relatively select group.
More importantly, based on internal comparisons, there was no association between mortality from kidney cancer or leukemia and various indices of gasoline exposure.
This cohort analysis, based on internal comparison, confirmed previously reported specific risk excesses for liver tumors and liver cirrhosis among autoclave workers and for lung cancer among PVC baggers, and revealed PVC compound workers as a possible new at risk group for all causes, all tumors and for liver and lung tumors.
This cut-off value was based on internal data (2004) in comparison to video-analysis and was previously used to discern movement in active (intensity > 30) from inactive (intensity < 30) period [ 17].
