A Randomized Intervention in Zimbabwe to Promote Regular Condom Use

A randomized intervention in Zimbabwe to promote regular condom use found both the intervention and the control groups reported similar decreases in unprotected sex. An Evaluation based on the Integrated Behavior Model concluded:

A) The intervention group shared information with the control group, accounting for the similar outcomes
B) Behavioral, normative, and efficacy beliefs were not correlated with behavioral intention
C) The intervention was effective in changing the beliefs and intentions in the intervention group to a greater degree than in the control group
D) Observed changes were likely due to factors outside of the intervention, such as condom availability
E) The effectiveness of the intervention could not have been improved