Skip to main content

Table 2 Percentage of newborns breastfed at birth, 3, 6 and 9 months: according to different maternal or newborn factors

From: Factors associated with duration of breastfeeding in Spain: a cohort study

Factor At hospital discharge 3 months 6 months 9 months
All participants 79.2 (76.4, 81.7) 56.6 (53.2, 59.8) 42.9 (39.6, 46.1) 32.2 (29.2, 35.3)
Maternal educational level
 Primary studies 69.0 (61.8, 75.1) 43.9 (36.7, 50.8) 32.6 (26.0, 39.4) 26.2 (20.1, 32.7)
 Secondary studies 81.1 (72.3, 87.4) 50.9 (41.1, 60.0) 37.7 (28.6, 46.9) 34.9 (26.0, 44.0)
 Foundation degree 76.0 (70.2, 80.8) 48.8 (42.5, 54.8) 34.3 (28.5, 40.1) 22.1 (17.2, 27.3)
 University studies 86.9 (82.7, 90.2) 71.3 (66.1, 76.0) 57.3 (51.7, 62.5) 43.0 (37.5, 48.3)
Maternal occupation
 Working 79.2 (75.7, 82.2) 59.2 (55.2, 63.0) 43.4 (39.5, 47.3) 31.5 (27.8, 35.2)
 Unemployed 59.2 (55.2, 63.0) 53.6 (45.4, 61.2) 43.7 (35.7, 51.4) 35.8 (28.2, 43.4)
 Inactive 78.1 (68.9, 84.9) 44.8 (35.1, 54.0) 37.1 (28.0, 46.3) 31.4 (22.8, 40.4)
 Student 100 66.7 (28.2, 87.8) 55.6 (20.4, 80.5) 33.3 (7.8, 62.3)
Smoking in pregnancy
 No 81.3 (78.4, 83.9) 60.1 (56.6, 63.5) 45.9 (42.3, 49.4) 35.0 (31.6, 38.4)
 Yes 65.2 (55.8, 73.1) 33.0 (24.6, 41.7) 22.6 (15.5, 30.6) 13.9 (8.3, 20.9)
Duration of pregnancy
  ≥ 37 weeks 80.1 (77.2, 82.7) 57.5 (54.0, 60.8) 43.6 (40.2, 47.0) 33.0 (29.8, 36.2)
 34–36 weeks 65.8 (48.5, 78.5) 50.0 (33.4, 64.5) 34.2 (19.8, 49.1) 26.3 (13.7, 40.8)
  < 34 weeks 68.4 (42.8, 84.4) 31.6 (12.9, 52.3) 26.3 (9.6, 46.8) 10.5 (1.8, 28.4)
Type of delivery
 Vaginal (non-instumental) 80.6 (77.1, 83.6) 57.8 (53.7, 61.6) 43.8 (39.7, 47.8) 33.1 (29.3, 37.0)
 Instrumental 80.0 (69.0, 87.4) 58.7 (46.7, 68.8) 40.0 (28.9, 50.8) 26.7 (17.3, 37.0)
 Cesarean rate 75.1 (68.7, 80.4) 52.6 (45.7, 59.0) 41.3 (34.7, 47.8) 31.9 (25.8, 38.2)
Newborn gender
 Male 79.0 (74.9, 82.6) 58.8 (54.0, 63.2) 44.9 (40.2, 49.5) 34.4 (30.0, 38.9)
 Female 79.4 (75.3, 82.9) 54.4 (49.6, 58.9) 40.8 (36.2, 45.4) 30.1 (25.8, 34.4)
Twin pregnancy
 No 79.9 (77.0, 82.5) 57.3 (53.9, 60.6) 43.7 (40.3, 47.0) 33.0 (29.9, 36.2)
 Yes 64.1 (47.0, 76.9) 41.0 (25.7, 55.8) 25.6 (13.3, 39.9) 15.4 (6.2, 28.3)
Newborn weight
  < 2500 67.5 (56.1, 76.6) 36.3 (25.9, 46.7) 31.3 (21.5, 41.5) 18.8 (11.1, 28.0)
 2500–4000 g 80.4 (77.3, 83.1) 58.5 (54.9, 62.0) 43.7 (40.1, 47.3) 33.0 (29.6, 36.4)
  > 4000 g 80.6 (68.9, 88.2) 59, 7 (47.0, 70.3) 47.8 (35.5, 59.1) 40.3 (28.6, 51.7)
  1. Note. Kaplan-Meier estimates and 95% confidence intervals