Table 2.

Outcome variable change over time between the intervention and control groups for the study sample

Outcome variable	Intervention (n = 380)				Control (n = 372)				Chi-Square	p-value
	N: (%)				N: (%)
	Positive transition from baseline to follow-up	Responded positively at baseline and follow-up	Negative transition from baseline to follow-up	Responded negatively at baseline and follow-up	Positive transition from baseline to follow-up	Responded positively at baseline and follow-up	Negative transition from baseline to follow-up	Responded negatively at baseline and follow-up
Do you believe that drowning is a serious health problem in Ningbo city?	31.32	24.47	2.11	42.11	6.99	29.30	0.00	63.71	71.474	<0.001
Do you believe that there are lots of drowning-risk waters around you?	31.84	18.16	3.42	46.58	5.65	25.54	0.81	68.01	84.222	<0.001
Do you believe that the likelihood of your accessing a drowning-risk water is great?	21.32	7.89	4.21	66.58	5.38	14.78	1.34	78.49	41.076	<0.001
Would you intend to avoid accessing to those drowning-risk waters when being exposed?	8.16	81.32	0.26	10.26	4.57	78.76	0.00	16.67	4.050	0.044