Table 2.
Result of subgroup analysis of included studies in meta‐analysis
| Sub‐grouped by | No. of trials | Effect size a | 95% CI, P value | I 2 (%) | P for heterogeneity | P for between subgroup heterogeneity |
|---|---|---|---|---|---|---|
| Weight (all trials) | 14 | 0.64 | [−0.11, 1.38], 0.093 | 69.1 | <0.001 | |
| Duration | 0.010 | |||||
| ≤8 weeks | 3 | 0.62 | [0.28, 0.96], <0.001 | 0.0 | 0.721 | |
| >8 weeks | 12 | 0.12 | [−0.08, 0.31], 0.249 | 62.2 | 0.003 | |
| Dose | 0.305 | |||||
| Low dose (≤320 g/day) | 8 | 0.17 | [−0.06, 0.41], 0.142 | 55.0 | 0.030 | |
| High dose (>320 g/day) | 6 | 0.21 | [−0.12, 0.54], 0.206 | 70.7 | 0.004 | |
| Type of control group | 0.984 | |||||
| Placebo | 11 | 0.21 | [−0.03, 0.45], 0.086 | 69.9 | 0.001 | |
| Medication | 3 | 0.19 | [−0.02, 0.41], 0.082 | 0.0 | 0.818 | |
| Concurrent treatment | 0.341 | |||||
| Chemotherapy | 3 | 0.07 | [−0.41, 0.54], 0.780 | 72.2 | 0.027 | |
| Radio (chemo)therapy | 6 | 0.19 | [0.04, 0.35], 0.015 | 5.2 | 0.383 | |
| Not reported | 5 | 0.23 | [−0.29, 0.76], 0.387 | 79.0 | 0.001 | |
a
Calculated by random‐effects model.
Note: Findings from the subgroup analyses showed a significant increase in body weight following short‐term intervention (≤8 weeks) (shown in bold).
Abbreviations: CI, confidence interval.