Table 1.

Demographic parameters and prevalence

Variable	Sero-prevalence
	First visit in 2014		Second visit in 2016
	N (%)	Prevalence Ratio with 95% CI	N (%)	Prevalence Ratio with 95% CI
Age group (Year)a
Below 10 (n = 427)	49 (11.5)	–	68 (15.9)	–
10 years or above (n = 392)	76 (19.4)	1.69 (1.21, 2.35) b	100 (25.5)	1.60 (1.22, 2.11) c
Gender
Female (n = 404)	71 (17.6)	–	91 (22.5)	–
Male (n = 415)	54 (13.0)	0.74 (0.53, 1.03)	77 (18.6)	0.82 (0.63, 1.08)
Demographic setting
Rural (n = 215)	25 (11.6)	–	28 (13.0)	–
Urban (n = 604)	100 (16.6)	1.42 (0.95, 2.15)	140 (23.2)	1.78 (1.22, 2.59) d

^aAge group is based on age at year of entry (2014) into the study; ^bP = 0.0017; ^cP = 0.0007; ^dP = 0.0015