Table 1.
Usage of PROGRESS-Plus factors within all studies (n = 59)
| PROGRESS-Plus factor | Use of PROGRESS-Plus factors | ||
|---|---|---|---|
| Sample description | Intervention effects | ||
| Control variablesa | Differential effects | ||
| Place of residence | 2 | 1 | 0 |
| Race/ethnicity | 22 | 2 | 2 |
| Occupation | 10 | 2 | 0 |
| Gender/sex | 58 | 19 | 9 |
| Religion | 1 | 0 | 0 |
| Education | 32 | 9 | 3 |
| Socioeconomic status (SES) | 2 | 0 | 0 |
| Income | 13 | 1 | 0 |
| Social capital | 1 | 0 | 0 |
| Age | 58 | 22 | 9 |
| Marital status | 21 | 3 | 2 |
| Living situation | 10 | 2 | 0 |
| Total studies | 59 | 22 | 11 |
aIn 5 studies represented in the column, PROGRESS-Plus factors were considered as confounding factors, but not included in final analyses (Place of residence n = 1, Gender/sex n = 3, Education n = 1, Age n = 5, Living situation n = 1)