Table 3.

Comparison of the adjusted prevalence rates of face mask-wearing among quintiles of the socioeconomic factors, using Analysis of Covariance (ANCOVA).

Quintiles	Adjusted prevalence rates (CI 95%) of mask usage *
	Land price	Employment	Literacy
Q1	28.6 (27.7–29.5)	39.8 (38.8–40.7)	12.4 (10.9–14.0)
Q2	46.4 (45.4–47.3)	39.0 (38.3–39.8)	27.2 (26.8–27.6)
Q3	40.1 (39.3–40.8)	42.5 (41.7–43.4)	51.5 (50.8–52.1)
Q4	45.1 (44.3–45.8)	40.3 (39.5–41.1)	52.0 (51.4–52.5)
Q5	56.0 (55.4–56.5)	59.1 (58.4–59.7)	63.6 (63.1–64.0)
P-value	<0.001	<0.001	<0.001

^*The adjusted prevalence rates are calculated using Analysis of Covariance (ANCOVA), adjusted for age and gender.