Systematic Reviews
Copyright ©The Author(s) 2025.
World J Meta-Anal. Jun 18, 2025; 13(2): 105511
Published online Jun 18, 2025. doi: 10.13105/wjma.v13.i2.105511
Table 2 Primary outcome measurement variables[14-21]
Primary outcome measurement variables
Number of studies (out of 8)
Household income/income4
Residential area/geographical location3
Socioeconomic status1
Parental or participant education2
Occupation1
Housing characteristics1
Health Insurance1