This study incorporated a purposeful sampling in an attempt to obtain a broad societal perspective, rather than what might be regarded as more rigorous population-based sampling approach.
But if confounding factors of lifestyle bedevil comparative studies of different populations, the supposedly more rigorous "prospective" studies of large American populations suffer from their own arguably even more disabling flaws.
However, because ethnic origin (e.g., Irish, German, Greek) is seldom available within general racial groups, including dyad fixed-effects is a more rigorous strategy of accounting for population stratification.
While no patterns or trends are evident within the charted data of identified interventions for BAME pregnant women, the interventions did all report 'positive outcomes', consequently, the included interventions were perceived as being beneficial to the target populations, although more rigorous research is needed to determine their efficacy [ 47, 48].
More rigorous research on a larger study population should be performed to achieve full evidence on this topic.
The results support recent case reports of behavioral treatment for this population but in more rigorous fashion.
The problem of efficient disposal and management of sewage sludge has become more rigorous owing to rapidly rising of population, economic growth and increasing numbers of treatment plants.
The SNPs and microsatellite polymorphisms offer important genetic markers for more rigorous analysis of North American monarch population structure and subspecies differences between migrating and non-migrating monarchs, than has been possible previously.
Both investigators and the general population supported a more rigorous response in the medical school scenario than in the humanities and social sciences department scenario.
Given that a number of tools appear to perform worse among women inmates, this tool may warrant a more rigorous evaluation in a general offender population as opposed to a health care setting.
