Table 3. Summary risk estimates of the association between BMI and persistent pain after breast cancer surgery.
| No of reports | OR (95% CI) | I2 (%) | P for heterogeneity | |
|---|---|---|---|---|
| Obesity vs normal (BMI: ≥30 vs 18.5-25) | 4 | 1.79 (1.19-2.68) | 58.3 | 0.066 |
| Overweight vs normal (BMI: 25-30 vs 18.5-25) | 4 | 1.20 (1.00-1.44) | 49.1 | 0.117 |
| Obesity vs non-obesity (BMI: ≥30 vs <30) | 7 | 1.39 (1.04-1.86) | 52.9 | 0.047 |
| Obesity or overweight vs normal or underweight (BMI: ≥25 vs <25) | 6 | 1.29 (1.00-1.65) | 61.5 | 0.024 |
| BMI: per unit increase | 6 | 1.04 (1.02-1.07) | 54.2 | 0.053 |