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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Invited to participate | 2 | 440 | Mean Difference (IV, Fixed, 95% CI) | ‐5.54 [‐8.23, ‐2.85] |
| 1.1 Simon 1999 | 1 | 123 | Mean Difference (IV, Fixed, 95% CI) | ‐7.10 [‐14.43, 0.23] |
| 1.2 Simon 2004 | 1 | 317 | Mean Difference (IV, Fixed, 95% CI) | ‐5.30 [‐8.19, ‐2.41] |
