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Caffeine+bright light versus placebo+bright light
| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Cognitive performance | 1 | Std. Mean Difference (IV, Fixed, 95% CI) | Subtotals only | |
| 1.1 Memory | 1 | 22 | Std. Mean Difference (IV, Fixed, 95% CI) | ‐0.23 [‐1.07, 0.61] |
| 1.2 Orientation & attention | 1 | 22 | Std. Mean Difference (IV, Fixed, 95% CI) | ‐0.16 [1.00, 0.68] |
