[Retracted] Breastfeeding and Reduced Risk of Breast Cancer: A Systematic Review and Meta-Analysis

Table 5

Comparison between duration of lactation and case-control studies.

Characteristics	[9]	[10]	[11]	[12]	[13]
≥24 months duration	72	81	N/A	10	4584
Cases	404	400	148	553	360
≥24 months duration	97	114	N/A	45	N/A
Controls	404	400	N/A	1381	57440
Total	808	800	26680	1094	110604