The number (and per cent) of trials (n=131) reporting protected characteristics at baseline in the REBALANCE systematic review of RCTs
| Protected characteristic is reported at baseline for each intervention arm | Protected characteristic is reported at baseline for the whole trial | Total | |
| Age | 126 (96.2%) | 4 (3.0%) | 130 (99.2%) |
| Physical health | 10 (7.6%) | 0 | 10 (7.6%) |
| Mental health | 10 (7.6%) | 0 | 10 (7.6%) |
| Diabetes | 6 (4.6%) | 0 | 6 (4.6%) |
| Sex | 126 (96.2%) | 2 (1.5%) | 128 (97.7%) |
| Gender reassignment | 0 | 0 | 0 |
| Sexual orientation | 0 | 0 | 0 |
| Marriage/civil partnership status | 38 (29.0%) | 0 | 38 (29.0%) |
| Pregnancy | 0 | 0 | 0 |
| Place of residence/housing | 6 (4.6%) | 0 | 6 (4.6%) |
| Occupation status | 27 (20.6%) | 1 (0.8%) | 28 (21.4%) |
| Education/literacy | 51 (38.9%) | 2 (1.5%) | 53 (40.5%) |
| Socioeconomic status | 29 (22.1%) | 1 (0.8%) | 30 (22.9%) |
| Social capital | 2 (1.5%) | 0 | 2 (1.5%) |
| Religion/belief | 1 (0.8%) | 0 | 1 (0.8%) |
| Race/ethnicity | 74 (56.5%) | 2 (1.5%) | 76 (58.0%) |
| PROGRESS-Plus | 2 (1.5%) | 0 | 2 (1.5%) |
PROGRESS, Place of residence, Race/ethnicity/culture/language, Occupation, Gender/sex, Religion, Education, Socioeconomic status, Social capital; RCTs, randomised controlled trials; REBALANCE, REview of Behaviour And Lifestyle interventions for severe obesity: AN evidenCE synthesis.