Sentence examples for appropriate comparison groups from inspiring English sources
The studies additionally were not conducted in a controlled way and lack appropriate comparison groups.
The ongoing monitoring of the diagnostic code density can provide guidance on study design and choice of appropriate comparison groups.
Suggestions for future research include greater specification of criteria for chronicity, use of more appropriate comparison groups and longer term prospective follow-up studies.
Estimation is based on quasi-experimental research designs that compare price changes occurring in places where wind farms become visible, with price changes in appropriate comparison groups.
The risk-reducing effect of a potential reduced-risk tobacco product (PRRP) can be investigated conceptually in a long-term, prospective study of disease risks among cigarette smokers who switch to a PRRP and in appropriate comparison groups.
Such features include selection of appropriate outcome measures (with a priori hypotheses linking care to the outcomes chosen), specification of appropriate primary sampling unit, specification of unit of analysis, establishment of appropriate comparison groups, and case-mix adjustment.
Statistics provide powerful tools for understanding the world around us, but the value of any analysis invariably comes down to choosing a useful statistic and an appropriate comparison group.
Its influence on academic careers is impossible to determine, because defining an appropriate comparison group is not feasible.
Without an appropriate comparison group, our results might have suggested (incorrectly) that MRI acquisition per se was associated with an increase in MRI volume.
A central issue in estimating the employment effects of minimum wages is the appropriate comparison group for states (or other regions) that adopt or increase the minimum wage.
However, the effectiveness and safety of CAS were not fully evaluated, mainly because of methodological difficulties in finding an appropriate comparison group.
