Skip to main content

Table 2 Reasons provided to support conducting an IPD 1

From: Systematic review of methods for individual patient data meta- analysis with binary outcomes

Reason

N (%)

To perform subgroup analyses

13 (50%)

To improve consistency across studies (in terms of inclusion criteria, outcome definition, etc.)

4 (15%)

To consider other outcomes

4 (15%)

To adjust for confounding variables

1 (4%)

To estimate diagnostic accuracy

5 (19%)

To identify predictors of an outcome

2 (8%)

Unclear

6 (23%)

  1. 1Percentages do not total to 100 because some studies reported more than one reason for conducting an IPD-MA.