Thus, on average, 13.87 and 14.57 additional postpartum women would have to experience severe breastfeeding
pain on day 1 and week 1, respectively, for one additional mother to experience postpartum depression at two months.21 Women who experienced moderate
pain with breastfeeding were 22 — 85 % more likely to experience postpartum depression 2 months after delivery; however, these effect
estimates were not statistically significant at conventional
levels (P =.05).