Table 1 Demographic characteristics of study participants in intervention and control groups

Maternal age (year), Mean (SD)

33.0 (4.4)

32.1 (4.4)

33.7 (4.4)

.290

Maternal education

.418

  < University degree

8 (24.2)

5 (33.3)

3 (16.7)

 University Degree or above

25 (75.8)

10 (66.7)

15 (83.3)

Monthly family income (HKD)^a

.850

  < $20,000

3 (9.1)

1 (6.7)

2 (11.1)

 $20,000–$39,999

5 (15.2)

3 (20.0)

2 (11.1)

  ≥ $40,000

25 (75.8)

11 (73.3)

14 (77.8)

Born in Hong Kong

.239

 No

9 (27.3)

6 (40.0)

3 (16.7)

 Yes

24 (72.7)

9 (60.0)

15 (83.3)

Intention to return to work postpartum

.665

 No

6 (18.2)

2 (13.3)

4 (22.2)

 Yes

27 (81.8)

13 (86.7)

14 (77.8)

Intention to exclusively breastfeed

.296

 No

18 (54.6)

10 (66.7)

8 (44.4)

 Yes

15 (45.5)

5 (33.3)

10 (55.6)

Partner’s infant feeding preference

1.000

 Breastfeeding

13 (39.4)

6 (40.0)

7 (38.9)

 Infant formula & mixed feeding

19 (57.6)

9 (60.0)

10 (55.6)

 No preference

1 (3.0)

0 (0.0)

1 (5.6)

Attended childbirth class (es)

.732

 No

17 (51.5)

7 (46.7)

10 (55.6)

 Yes

16 (48.5)

8 (53.3)

8 (44.4)

Attended breastfeeding class (es)

.729

 No

18 (54.6)

9 (60.0)

9 (50.0)

 Yes

15 (45.5)

6 (40.0)

9 (50.0)

Mode of birth

.493

 Spontaneous vaginal

17 (51.5)

10 (66.7)

7 (38.9)

 Assisted vaginal

6 (18.2)

2 (13.3)

4 (22.2)

 Planned caesarean

5 (15.2)

1 (6.7)

2 (22.2)

 Emergency caesarean

5 (15.2)

2 (13.3)

3 (16.7)