Appendix G3 Guidelines for Critically Appraising Quantitative Sampling Plans

Was the population identified? Were eligibility criteria specified?

What type of sampling design was used? Was the sampling plan one that could be expected to yield a representative sample?

How many participants were in the sample? Was the sample size affected by high rates of refusals or attrition? Was the sample size large enough to support statistical conclusion validity? Was the sample size justified on the basis of a power analysis or other rationale?

Were key characteristics of the sample described (e.g., mean age, percentage of female)?

To whom can the study results reasonably be generalized?