Addi van Bergen

162 Detailed Questions 3. Were the subjects recruited in an acceptable way? Yes Can’t tell No HINT: We are looking for selection bias which might compromise the generalizability of the findings: • Was the sample representative of a defined population? • Was everybody included who should have been included? 4. Were the measures accurately measured to Yes Can’t tell No reduce bias? HINT: We are looking for measurement or classification bias: • Did they use subjective or objective measurements? • Do the measures truly reflect what you want them to (have they been validated)? 5. Were the data collected in a way that addressed the Yes Can’t tell No research issue? Consider: • if the setting for data collection was justified • if it is clear how data were collected (e.g.,interview, questionnaire, chart review) • if the researcher has justified the methods chosen • if the researcher has made the methods explicit (e.g. for interview method, is there an indication of how interviews were conducted?) 6. Did the study have enough participants to minimize Yes Can’t tell No the play of chance? Consider: • if the result is precise enough to make a decision • if there is a power calculation. This will estimate how many subjects are needed to produce a reliable estimate of the measure(s) of interest. 7. How are the results presented and what is the m Yes Can’t tell No ain result? Consider: • if, for example, the results are presented as a proportion of people experiencing an outcome,