Table 2.
Subgroup analysis.
| Subgroup analyses | Description | Contributing effect sizes | Fishers Z | 95% CI | Q | p value | |
|---|---|---|---|---|---|---|---|
| Sample composition | Clinical | 7 | − 0.27 | − 0.37 | − 0.17 | ||
| Non-clinical | 36 | − 0.23 | − 0.26 | − 0.20 | 0.52 | 0.47 | |
| Publication year | 2020 | 12 | − 0.24 | − 0.31 | − 0.16 | ||
| Other year& | 31 | − 0.24 | − 0.27 | − 0.21 | 0.00 | 0.94 | |
| Eveningness measure | CSM | 11 | − 0.24 | − 0.31 | − 0.17 | ||
| MEQ | 26 | − 0.24 | − 0.28 | − 0.20 | |||
| rMEQ | 6 | − 0.24 | − 0.30 | − 0.17 | 0.00 | 0.99 | |
| Depression measure | BDI | 12 | − 0.25 | − 0.32 | − 0.18 | ||
| CES-D | 10 | − 0.23 | − 0.28 | − 0.18 | |||
| Other&& | 21 | − 0.24 | − 0.28 | − 0.20 | 0.13 | 0.94 | |
Other year& = publication year other than 2020; Other&& = any depression measure other than BDI or CES-D (see text for details). Q-test for between study heterogeneity, p value for subgroup differences.