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(IEEE, 2021)

Sample size calculation The formula for a cross-sectional study was used to calculate the sample size for each selected village: where p is the prevalence of hypertension in the Chinese population 13 , is the margin of error (to estimate prevalence with a precision is equal to half of the prevalence of hypertension), and deff is the effect of design ( deff =2)

Items with outer loadings less than 0.50 are typically removed from the measurement model as they contribute relatively less to the underlying factors [81]

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