Socio-demographic characteristics of participants [n (%)].
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a)Dada may not sum up to n = 206 in School A due to non-response.c)Dada may not sum up to n = 221 in School B due to non-response.b)and d) Dada sum up to 100% due to calculation not included non-response.e)A chi-square test or Fisher’s exact test was used to compare categorical variables.f)Monthly income per capita.
创建时间：
2015-12-02
