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Fail-safe numbers of all groups for studies with no heterogeneity.
| Group | Number of studies | Fail-safe number | |
|---|---|---|---|
| α = 0.05 | α = 0.01 | ||
| A1 | 3 | 10.984 | 3.928 |
| A2 | 3 | −0.038 | −1.533 |
| A3 | 3 | 2.748 | −0.152 |
| B1 | 4 | 25.435 | 10.583 |
| B2 | 4 | 64.381 | 29.878 |
| B3 | 4 | 15.047 | 5.436 |
A1: BMI ≥ 30 versus BMI < 25; A2: 25 ≤ BMI < 30 versus BMI < 25; A3: BMI ≥ 30 versus 25 ≤ BMI < 30; B1: BMI ≥ 30 versus BMI < 25; B2: 25 ≤ BMI < 30 versus BMI < 25; B3: BMI ≥ 30 versus 25 ≤ BMI < 30. BMI indicates body mass index (kg/m2).
