Table 3.
Lactation characteristics.
| Characteristic | n | |
|---|---|---|
| Duration of lactation of the previous child (months) | 59 a | |
| <3 | 0 (0.0%) | |
| 3–6 | 2 (3.4%) | |
| 6–12 | 12 (20.3%) | |
| 12–24 | 25 (42.4%) | |
| >24 | 20 (33.9%) | |
| Current breastfeeding time (months) | 143 | 6.05 (4.27, 11.20) |
| Type of lactation | 142 b | |
| Exclusive | 71 (50.0%) | |
| Partial | 71 (50.0%) | |
| Sum of breastfeeding times plus daily milk pumping sessions | 143 | |
| <5 | 14 (9.8%) | |
| 5–10 | 87 (60.8%) | |
| >10 | 39 (27.3%) | |
| Missing data | 3 (2.1%) | |
| Tandem nursing * (Yes) | 143 | 10 (7.0%) |
| Breastfeeding twins (Yes) | 143 | 4 (2.8%) |
| Type of milk extraction ** | 143 | |
| Manual | 12 (8.4%) | |
| Mechanical breast pump | 15 (10.5%) | |
| Simple electric breast pump | 101 (70.6%) | |
| Double electric breast pump | 26 (18.2%) |
The variable “current breastfeeding time” is expressed as a median (25th percentile, 75th percentile) because of its non-parametric distribution. Qualitative variables are described by absolute and relative frequencies (%). a Women with previous children. b Sample size decreases due to one fetal death. * Breastfeeding two or more children of different ages. ** Categories do not exclude each other.