. 2020 Oct 30;22(10):e16378. doi: 10.2196/16378

Table 4.

Effectiveness of the intervention in participating college students at the 1-month follow-up.

Scale	Intervention (N=290), mean (SD)			Control (N=288), mean (SD)			Control vs intervention P value				Univariate regression analysis P value (95% CI)
	HKU^a (n=98)	HSUHK^b (n=91)	VTC^c (n=101)	HKU (n=117)	HSUHK (n=92)	VTC (n=79)	HKU	HSUHK	VTC	Total	Univariate regression analysis P value (95% CI)
GSE^d	24.55 (5.57)	24.68 (4.85)	23.59 (5.88)	23.01 (4.71)	22.32 (5.14)	23.37 (5.87)	.12^e	<.001^e	.53^e	<.001^f	.04 (−0.03 to −0.01)
RPS^g	5.57 (0.99)	5.67 (1.01)	4.72 (1.55)	5.73 (1.09)	5.65 (1.13)	5.31 (1.23)	.10^e	.97^e	.32^e	.12^f	.06 (0.02 to 0.09)
PHQ-2^h	4.24 (1.41)	3.78 (1.34)	4.55 (1.52)	4.09 (1.31)	3.77 (1.15)	4.30 (1.51)	.47^e	.80^e	.26^e	.19^f	.23 (−0.05 to 0.01)

^aHKU: University of Hong Kong.

^bHSUHK: Hang Seng University of Hong Kong.

^cVTC: Vocational Training College.

^dGSE: general self-efficacy scale.

^eMann-Whitney U test is used to compare the statistical difference between groups within institutions.

^fMann-Whitney U test is used to compare the statistical difference between groups overall.

^gRPS: risk propensity scale.

^hPHQ-2: Patient Health Questionnaire-2.