Table 2.

Mean percentage for correct scores for the postintervention and follow-up assessments

Item/concept	Mean scores			F statistic	P value	P values between groupsa
	Group 1: enhanced standard form	Group 2: context-specific form	Group 3: counseling cards			Groups 1 & 2	Groups 1 & 3	Groups 2 & 3
Postintervention	n = 96	n = 101	n = 100
Understanding of research concepts	57.4	66.2	69.3	26.982,294	<0.001	<0.001	<0.001	0.14
Understanding of study procedures	47.6	65.5	69.9	82.362,294	<0.001	<0.001	<0.001	0.039
Follow-up	n = 53	n = 63	n = 67
Understanding of research concepts	58.2	68.3	69.6	16.132,180	<0.001	<0.001	<0.001	0.81
Understanding of study procedures	51.4	61.2	65.5	18.402,180	<0.001	0.002	<0.001	0.14

^aP values are computed for multiple comparisons using the Tukey–Kramer method for multiple comparisons