Table 1 Baseline characteristics (N=54)
Variable | Experimental n=27 | Control n=27 | P |
|---|---|---|---|
Continuous variables Median (IQR) | |||
 Age (years) | 29.0 (28.0, 33.0) | 29.0 (26.0, 33.0) | 0.883 |
 Gestational length (weeks) | 38.0 (37.0, 39.0) | 39.0 (38.0, 40.0) | 0.231 |
 Number of children | 1 (1, 2) | 1 (1, 2) | 0.378 |
 Number of breastfed children | 0 (0, 1) | 0 (0, 1) | 0.465 |
 Longest previous breastfeeding (months)a | 3.0 (1.5, 10.0) | 3.0 (1.0, 9.0) | 0.681 |
 Infant birth weight (grams) | 3315 (2955, 3545) | 3285 (3135, 3450) | 0.647 |
 1-minute APGAR score | 8 (8, 9) | 9 (8, 9) | 0.977 |
 5-minute APGAR score | 9 (9, 10) | 9 (9, 10) | 0.788 |
Categorical Variables n (%) | |||
 Caesarean delivery | 16 (59.3) | 11 (40.7) | 0.276 |
 Male infant | 14 (51.9) | 13 (48.1) | 1.000 |
 Infant admitted to NICU | 1 (3.7) | 1 (3.7) | 1.000 |
 Female obstetrician | 10 (37.0) | 12 (44.4) | 0.782 |
 Mother employed | 17 (63.0) | 19 (70.4) | 0.773 |
 University education | 24 (88.9) | 26 (96.3) | 0.610 |
 Monthly income >$1000 | 23 (85.2) | 22 (81.5) | 1.000 |
 Had support at home | 25 (92.6) | 25 (92.6) | 1.000 |
Right nipple | |||
 Inverted grade I | 23 (85.2) | 20 (74.1) | 1.000 |
 Inverted grade 2 | 1 (3.7) | 1 (3.7) |  |
Left nipple | |||
 Inverted grade I | 20 (74.1) | 20 (74.1) | 0.352 |
 Inverted grade 2 | 1 (3.7) | 4 (14.8) |  |
 Bilateral nipple inversion | 20 (76.9) | 18 (66.7) | 0.544 |