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Table 2 Comparison of the differences in knowledge scores between pre- and post-DVD in intervention group and control group

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 IG (n = 96) CG (n = 95)
Pre-
DVD
mean (SD)
Post-
DVD
mean (SD)
t test Pre-
DVD
mean (SD)
Post-
DVD
mean (SD)
t test
P & A
(range 0–6)
2.73 (1.41) 4.04
(1.16)
t (95) = −8.29
p < 0.01
2.86
(1.37)
2.83
(1.19)
t (94) = 0.28
p = 0.78
HE
(range 0–6)
2.66 (1.09) 3.70 (1.00) t (95) = −8.13
p < 0.01
2.81
(1.13)
2.73
(1.19)
t (94) = 0.86
p = 0.39
Total
(range 0–12)
5.39
(2.03)
7.74 (1.71) t (95) = −10.95
p < 0.01
5.67
(1.70)
5.56
(1.62)
t (94) = 0.85
p = 0.40