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Table 2 Mean breastfeeding duration in relation to maternal and infant characteristics (n = 389)

From: Evaluation of the impact of breast milk expression in early postpartum period on breastfeeding duration: a prospective cohort study

Variable

N (%)

Mean breastfeeding duration, months (95 % CI)

P

Maternal age (years) (n = 389)

  

0.41

 20–25

48 (12.3)

5.8 (4.8–6.9)

 

 26–29

226 (58.1)

5.9 (5.5–6.3)

 30–35

93 (23.9)

5.6 (5.0–6.2)

 >35

22 (5.7)

4.3 (2.7–6.0)

Baby gender (n = 389)

  

0.48

 Male

206 (53.0)

5.6 (5.2–6.1)

 

 Female

183 (47.0)

5.9 (5.4–6.4)

Birth weight (n = 389)

  

0.20

 <2500 g

18 (4.6)

5.0 (3.6–6.3)

 

 2500–3999 g

348 (89.5)

5.8 (5.5–6.2)

 ≥4000 g

23 (5.9)

5.0 (3.7–6.2)

Primiparity (n = 389)

  

0.07

 Yes

364 (93.6)

5.6 (5.3–5.9)

 

 No

25 (6.4)

7.4 (6.4–8.5)

Delivery method (n = 389)

  

0.003

 Vaginal

180 (46.3)

6.2 (5.7–6.7)

 

 Cesarean

209 (53.7)

5.4 (5.0–5.8)

Education level (n = 389)

  

0.001

 Graduate

23 (5.9)

3.9 (2.9–4.9)

 

 University/college

246 (63.2)

5.6 (5.2–6.0)

 Middle school

120 (30.8)

6.3 (5.7–6.0)

Maternity leave (n = 389)

  

<0.001

 >6 months

66 (17.0)

9.0(8.2–9.7)

 

 ≤6 month

323 (83.0)

5.1(4.8–5.4)

Bottle-feeding in hospital (n = 389)

  

0.03

 Yes

350 (90.0)

5.6(5.3–5.9)

 

 No

39 (10.0)

7.1(6.1–8.2)

Breast milk expression in hospital (n = 389)

  

0.47

 Yes

334 (85.9)

5.7(5.3–6.0)

 

 No

55 (14.1)

6.1(5.2–7.0)

Exclusive breastfeeding at 6 weeks postpartum (n = 345)

  

0.01

 Yes

135 (39.1)

6.7 (6.2–7.3)

 

 No

210 (60.9)

6.1 (5.8–6.5)

Expressing patterns at 6 weeks postpartum (n = 345)

  

<0.001

 Direct breastfeeding (group 1)

123 (35.7)

6.7 (6.2–7.3)

 

 Combining direct breastfeeding with expressing (group 2)

144 (41.7)

6.7 (6.2–7.2)

 Exclusive expressing (group 3)

78 (22.6)

5.1 (4.6–5.6)

Expressing patterns in exclusive breastfeeding mothers at 6 weeks postpartum (n = 135)

  

<0.001

 Direct breastfeeding (group 1)

41 (30.3)

6.9 (5.8–7.9)

 

 Combining direct breastfeeding with expressing (group 2)

77 (57.0)

7.3 (6.6–8.1)

 Exclusive expressing (group 3)

17 (12.6)

3.8 (3.1–4.5)

Expressing patterns in partial breastfeeding mothers at 6 weeks postpartum (n = 210)

  

0.02

 Direct breastfeeding (group 1)

82 (39.0)

6.7 (6.1–7.3)

 

 Combining direct breastfeeding with expressing (group 2)

67 (31.9)

6.0 (5.4–6.7)

 Exclusive expressing (group 3)

61 (29.0)

5.5 (4.9–6.0)