Table 3.
Comparison of the infants’ characteristics and breastfeeding status of mothers with delayed versus normal lactogenesis ii onset (N = 94)
| Delayed group (n = 51) |
Normal group (n = 43) |
χ2/U | df | p* | |
|---|---|---|---|---|---|
| Infants characteristic | |||||
| Twin, n (%) | 31 (60.8) | 18 (41.9) | 3.35 | 1 | 0.07 |
| Apgar score at 5′<7, n (%) | 1 (2.2) | 0 | – | – | – |
| Mechanical ventilation ≥3 days, n (%) | 3 (5.9) | 4 (9.3) | – | – | – |
| Length of stay, day, median (IQR) | 25.0 (16.0, 31.0) | 25.0 (15.0, 40.0) | 1027.50 | N/A | 0.60 |
| Age at discharge, weeks, median (IQR) | 36.4 (35.6, 37.7) | 36.1 (35.4, 37.0) | 1175.00 | N/A | 0.55 |
| Breastfeeding status | |||||
| Exclusive breastfeeding at discharge, n (%) | 17 (33.3) | 30 (69.8) | 12.39 | 1 | 0.001 |
| Breastfeeding at 3 months of corrected age, n (%)1 | 25 (55.6) | 32 (88.9) | 10.66 | 1 | 0.001 |
| Exclusive breastfeeding at 3 months of corrected age, n (%)1 | 8 (17.8) | 19 (52.8) | 11.03 | 1 | 0.001 |
Note. Data are represented as number (%) or median (IQR, interquartile); * p-value is based on the results of a Mann-Whitney U test for continuous variables and a chi-square test for categorical one. IQR = interquartile
1At 3 months of corrected age, 62 mothers and 81 infants participated in the follow-up; of them, 32 mothers (with 45 infants) had delayed lactogenesis II onset and 30 mothers (with 36 infants) had normal onset