Research Article
[Retracted] Breastfeeding and Reduced Risk of Breast Cancer: A Systematic Review and Meta-Analysis
Table 3
Menarche age comparison of breast cancer and control cases.
| Characteristics | [9] | [10] | [11] | [12] | [13] |
| Age at menarche (years)—breast cancer cases | >13 | 168 | 166 | N/A | 255 | N/A | 14-15 | 168 | 157 | N/A | 344 | N/A | ≥16 | 77 | 77 | N/A | 103 | N/A | N (breast cancer cases) | 404 | 400 | 148 | 706 | 360 | Age at menarche (years)—control cases | >13 | 191 | 189 | N/A | 479 | N/A | 14-15 | 122 | 120 | N/A | 676 | N/A | ≥16 | 91 | 91 | N/A | 224 | N/A | (control cases) | 404 | 400 | N/A | 1381 | 57440 |
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