Table 2.

Outcomes of the included studies.

Study and outcome measures		Intervention group score, mean (SD)	Control group score, mean (SD)
				Danley et al [46]
	Knowledge	3.0 (0.76)	2.1 (0.78)
	Attitude	4.6 (1.15)	3.9 (1.08)
Harris et al [47]
	Knowledge	3.3 (1.96)	2.5 (0.02)
	Attitude	—a	—
	Satisfaction	—	—
	Self-efficacy	3.7 (1.20)	3.3 (0.04)
Hsieh et al [48]
	Knowledge	3.1 (2.29)	2.3 (0.18)
	Attitude	5.5 (0.19)	4.8 (1.25)
Shapiro et al [49]
	Knowledge	80.5 (1.24)	76.1 (1.56)
	Satisfaction	—	—
Short et al [43]
	Knowledge	28.4 (5.68)	25.8 (5.68)
	Attitude	4.7 (1.00)	3.5 (1.00)
	Self-efficacy	4.6 (1.15)	3.8 (1.15)
Smeekens et al [50]
	Skills	71 (18)	89 (19)
	Self-efficacy	447 (98)	502 (96)

^aNot available.