Sentence examples for based studies may be from inspiring English sources

The accuracy of reporting perceived impairments in population based studies may be limited.

Further evaluation with a larger population based study may be needed.

While a comparison to other accelerometer-based studies may be difficult due to cross-population differences in measurement and procedures [ 4], the current guideline based on previous research and expert opinions suggest that at least 60 min MVPA/day is required for youth to have optimal health benefits [ 14, 15, 27, 63].

For example, estimates from survey-based studies may be incompatible with traditional econometric studies using aggregate data.

Finally, we must bear in mind that comorbidity rates in clinic-based studies may be higher than in population-based studies because of an increased vigilance or selection bias.

The rectal occurrence of lactobacilli in culture-based studies may be underreported.

Register-based studies may be biased by lack of drug compliance.

Still to be acknowledged, population-based studies may be associated with some difficulties as several prognostic variables often are unavailable.

The differences between population-based studies may be due to microbiologic attributes of the strains involved or other unknown factors.

6 This wide variability in population-based studies may be attributed to the different survey periods, diverse target populations and variable protocols.

Centre-based studies may be misleading in post-conflict situations as many women do not have access to perinatal care [ 25].