[Effect evaluation of comprehensive environmental health intervention on health knowledge, attitude and practice of community residents on air pollution].

Objective: To understand the current status of residents' knowledge-attitudes-practice(KAP)towards air pollution and environmental health in four cities, and to evaluate the effectiveness of interventions.

Methods: Using cluster sampling, a comprehensive intervention targeting KAP regarding air pollution and environmental health was conducted among 2431 adult residents in Beijing City, Yichang City, Dandong City and Lhasa City in 2023. Baseline surveys and effectiveness evaluation surveys were conducted before and after the intervention.

Results: After intervention, the KAP scores of residents in the four cities were 86.27±10.49, which was higher than the intervention score of 70.00±14.60(χ~2=61.48, P<0.01). After intervention, the scores for the three dimensions of KAP were 30.64±3.23, 24.28±3.78 and 31.34±6.44, respectively. There were statistically significant differences in the levels of KAP in knowledge, attitudes, and practice before and after the intervention(χ~2 values were 46.84, 37.84 and 49.94, respectively, P<0.01). After intervention, the overall level of KAP, as well as the average level of KAP in three dimensions, improved among different populations, and the difference was statistically significant. The difference after intervention was greater in Dandong City(24.27±12.95, P<0.01) than in Beijing City(15.64±11.44, P<0.01), Lhasa City(15.23±12.53, P<0.01), and Yichang City(10.02±11.10, P<0.01). The difference was also greater in males(16.72±13.41, P<0.01) than in females(15.967±12.80, P<0.01). Additionally, the improvement was more significant among individuals aged 60 and above(20.20±12.86, P<0.01) compared to those aged 46-60(17.99±12.70, P<0.01) and those aged 18-45(12.86±12.53, P<0.01). Furthermore, the improvement was more pronounced among individuals with junior high school education(21.08±12.59, P<0.01) compared to those with primary school and below education(17.49±13.06, P<0.01), vocational school/high school education(16.06±12.38, P<0.01), college/undergraduate education(12.44±12.61, P<0.01), and master's degree and above education(10.36±10.49, P<0.01).

Conclusion: Comprehensive intervention measures are an effective means to enhance the KAP of community residents regarding air pollution and environmental health.