Table 3.

Comparison of the median upper quartile (UQ) of subjective norms, intention, and behavior in the intervention and control groups before and after the intervention

Variables	Case	Control	Mann-Whitney test
Subjective norms
Before intervention	25 (28)	25 (28)	P=0.6, Z=−0.49
After intervention	30 (34)	26 (29)	P=0.002, Z=−3.1
Wilcoxon test	P<0.001, Z=−4.1	P= 0.70, Z=−0.37
Intention
Before intervention	6 (7)	7 (7)	P=0.006, Z=−2.7
After intervention	7 (7)	7 (7)	P=0.01, Z=−2.4
Wilcoxon test	P<0.001, Z=−3.8	P=0.41, Z=−0.81
Behavior
Before intervention	22 (23)	22 (23)	P=0.89, Z=−0.12
After intervention	23 (23)	22 (23)	P=0.28, Z=−1.06
Wilcoxon test	P=0.106, Z=−1.6	P=0.39, Z=−0.85