Table 4 Adjusted multivariable logistic regression, associations between intrapartum interventions and breastfeeding outcomes at 3-months and 6-months post-partum

 Vaginal Birth

32,636 (54.9)

1

–

43,211 (72.7)

1

–

9622 (15.2)

1

–

36,446 (57.7)

1

–

 Pre-labour CS

8789 (47.9)

0.73 (0.71–0.76)

< 0.001

12,308 (67.1)

0.70 (0.68–0.73)

< 0.001

2512 (13.0)

0.81 (0.77–0.86)

< 0.001

9781 (50.6)

0.72 (0.69–0.74)

< 0.001

 In-labour CS

5278 (46.9)

0.79 (0.76–0.83)

< 0.001

7569 (69.2)

0.79 (0.75–0.83)

< 0.001

1579 (13.1)

0.88 (0.82–0.93)

< 0.001

6172 (51.2)

0.80 (0.77–0.84)

< 0.001

 No

34,776 (54.3)

1

–

46,289 (72.3)

1

–

10,166 (15.0)

1

–

38,949 (57.4)

1

–

 Yes

11,927 (47.6)

0.77 (0.75–0.80)

< 0.001

16,799 (67.1)

0.77 (0.74–0.80)

< 0.001

3547 (13.3)

0.89 (0.85–0.93)

< 0.001

13,451 (50.5)

0.76 (0.74–0.78)

< 0.001

 No

32,052 (54.2)

1

–

42,607 (72.1)

1

–

9429 (15.0)

1

–

35,711 (56.8)

1

–

 Yes

14,651 (48.9)

0.89 (0.86–0.92)

< 0.001

20,481 (68.4)

0.91 (0.88–0.94)

< 0.001

4284 (13.5)

0.95 (0.91–0.99)

< 0.001

16,689 (52.8)

0.92 (0.90–0.95)

< 0.001

 None

18,014 (59.2)

1

–

23,096 (75.9)

1

–

5361 (16.6)

1

–

20,073 (62.0)

1

–

 One

18,935 (50.2)

0.71 (0.68–0.73)

< 0.001

26,070 (69.1)

0.70 (0.66–0.72)

< 0.001

5431 (13.6)

0.82 (0.79–0.86)

< 0.001

21,143 (53.0)

0.69 (0.67–0.72)

< 0.001

 Two

7524 (47.6)

0.65 (0.63–0.68)

< 0.001

10,642 (67.3)

0.65 (0.62–0.68)

< 0.001

2258 (13.4)

0.82 (0.78–0.87)

< 0.001

8570 (51.0)

0.66 (0.63–0.69)

< 0.001

 Three

2197 (43.7)

0.60 (0.56–0.64)

< 0.001

3236 (64.3)

0.58 (0.53–0.62)

< 0.001

648 (12.2)

0.75 (0.68–0.83)

< 0.001

2576 (48.4)

0.61 (0.57–0.65)

< 0.001