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Table 2 Item-total correlations and Cronbach’s α if deleted for users

From: Assessing the quality of published genetic association studies in meta-analyses: the quality of genetic studies (Q-Genie) tool

Item Question Item-total correlation Cronbach’s α if item is deleted
Question 1 Please rate the study on the adequacy of the presented hypothesis and rationale. 0.53 0.94
Question 2 Please rate the study on the classification of the outcome (e.g. disease status or quantitative trait). 0.38 0.94
Question 3 Please rate the study on the description of comparison groups (e.g. cases and controls). 0.51 0.94
Question 4 Please rate the study on the technical classification of the exposure (i.e. the genetic variant). 0.86 0.92
Question 5 Please rate the study on the non-technical classification of the exposure (i.e. the genetic variant). 0.55 0.94
Question 6 Please rate the study on the disclosure and discussion of sources of bias. 0.57 0.94
Question 7 Please rate whether the study was adequately powered. 0.84 0.93
Question 8 Please rate the study on description of planned analyses. 0.85 0.92
Question 9 Please rate the study on the statistical methods. 0.87 0.92
Question 10 Please rate the study on the description and test of all assumptions and inferences. 0.80 0.93
Question 11 Please rate the study on whether conclusions drawn by the authors were supported by the results and appropriate methods. 0.88 0.92