Sentence examples for because the reference group from inspiring English sources

Because the reference group comprised of men who did not want to join the intervention, the groups were not randomly assigned.

However, the choice of the parameters is of subordinate importance for comparative purposes because defining the reference group affects the level of the adjusted scores but not the adjusted differences across countries.

RRRs could not be computed because drivers in the reference group aged 40 54 were never required to pass an on-road driving test at routine in-person license renewal in any state; however, aRRs provided no significant evidence of any effect (Table 2).

However, these results must be interpreted with caution, because the size of the reference group (households who owned no hygiene material) was extremely low (< 1%).

We saw a similar pattern for low cognitive function, but this measure is expected to be weaker because the prevalence in the reference group is by definition around 25%, limiting the maximum ratio to 4. For this measure we found a prevalence ratio of 1.33 (95% CI, 0.94; 1.88) after controlling for the covariates.

The second potential limitation was that we used the group with "other headaches", not a group with "no headaches", as the reference group, because according the study design only the subjects who reported having ever experienced headaches were asked to fill out the alcohol-related questionnaire.

For example, an individual is more likely to use marijuana if there is a high rate of marijuana usage among the reference group because friends engagement in such activities could develop a social norm which might compel an individual to use drugs in order to fit in with one's peer [14].

For the categorical analysis, we used the highest dose group (> 300 ppt) as the reference group because the lowest dose group (≤ 20 ppt) had the smallest sample size.

Whites were used as the reference group because of the common use of this group in examining racial disparities.

We used Highway 401 as the reference group because it included the largest number of collisions.

They were used as the reference group because laboratories tend to be centralized.