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Table 5 Change in total confidence scores in sub-groups of intervention group between pre- and post-training

From: A randomised controlled trial of the effectiveness of a breastfeeding training DVD on improving breastfeeding knowledge and confidence among healthcare professionals in China

Items

Number

Pre-DVD

mean (SD)

(range 0–80)

Post-DVD

mean (SD)

(range 0–80)

ANOVA

(interaction effect)

ANOVA

(within-subject effect)

Age

<30

14

68.43 (11.01)

69.36 (9.10)

F(2,48) =1.25

p = 0.30

F(1,48) =23.63

p < 0.01

30–39

30

69.63 (9.35)

72.73 (7.33)

>39

7

69.00 (13.42)

73.43 (8.00)

Working hospital

Provincial /municipal hospital

30

68.67 (10.38)

72.10 (8.58)

F(1,67) =2.39

p = 0.13

F(1,67) =22.31

p < 0.01

County hospital

39

64.82 (11.76)

71.59 (9.97)

Job type

Nurse

35

68.57 (9.73)

71.43 (8.50)

F(2,66) =2.97

p = 0.06

F(1,66) =29.91

p < 0.01

Midwife

15

67.00 (11.09)

73.93 (7.27)

Doctor

19

62.26 (13.32)

70.84 (12.09)

Job title

Senior or mid-grade

32

68.35 (11.11)

73.19 (7.49)

F(1,67) =0.23

P = 0.64

F(1,67) =24.12

p < 0.01

Primary

37

64.34 (11.24)

70.22 (11.00)

Years since qualification

≤ 5 years

28

65.89 (11.45)

71.11 (7.63)

F(1,66) =0.02

p = 0.89

F(1,66) =22.97

p < 0.01

>  5 years

40

66.77 (11.38)

72.30 (10.53)

Years working with BFa mothers

≤2 years

14

60.50 (12.79)

68.43 (8.29)

F(2,64) =0.89

p = 0.42

F(1,64) =24.43

p < 0.01

3–10 years

24

67.21 (10.26)

72.46 (7.35)

> 10 years

29

68.41 (10.81)

72.41 (11.17)

Previous training on BF

Yes

51

68.47 (10.01)

73.08 (7.34)

F(1,67) =1.23

p = 0.27

F(1,67) =23.58

p < 0.01

No

18

60.89 (12.97)

68.22 (12.39)

  1. aBF Breastfeeding
  2. Cases were deleted where there was missing data on the dependent variable