Table 5 Numbers of retrieved studies and pooled odds ratio for the association of breastfeeding with the risk of five individual cancer types
From: Breastfeeding and the risk of childhood cancer: a systematic review and dose-response meta-analysis
| Â | Ever versus non/occasional breastfeeding | Longest breastfeeding versus shortest breastfeeding | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Cancer type | No. of studies | OR (95%CI) | P value | I2 (%) | P value for heterogeneity | No. of studies | OR (95%CI) | P value | I2 (%) | P value for heterogeneity |
Neuroblastoma | 4 | 0.59 (0.44 ~ 0.81) | 0.001 | 29.2 | 0.237 | 4 | 0.61 (0.44 ~ 0.83) | 0.002 | 0.0 | 0.482 |
Soft-tissue sarcoma | 4 | 0.79 (0.44 ~ 1.44) | 0.448 | 37.1 | 0.189 | 3 | 0.69 (0.14 ~ 3.44) | 0.649 | 63.9 | 0.063 |
Nephroblastoma | 3 | 0.63 (0.41 ~ 0.98) | 0.041 | 57.2 | 0.097 | 3 | 0.76 (0.44 ~ 1.32) | 0.324 | 49.1 | 0.140 |
Retinoblastoma | 2 | 1.32 (0.17 ~ 10.24) | 0.792 | 72.6 | 0.056 | 2 | 1.08 (0.57 ~ 2.07) | 0.807 | 0.0 | 0.411 |
Germ cell tumors | 2 | 1.08 (0.73 ~ 1.60) | 0.708 | 0.0 | 0.639 | 2 | 2.64 (1.05 ~ 6.60) | 0.038 | 0.0 | 0.319 |