Table 1. Trend of different Shigella species over the last 20 years in urban and rural sites.

	Urban site (Dhaka hospital)			Rural site (Matlab hospital)
	Total isolates (n = 883) (%)	aOR (95% CI)	p-value	Total isolates (n = 1263) (%)	aOR (95% CI)	p-value
S. flexneri	463 (52.43)	0.96 (0.93–0.98)	<0.01	945 (74.82)	0.97 (0.94–0.99)	<0.01
S. dysentreriae	52 (5.89)	0.91 (0.86–0.96)	<0.01	60 (4.75)	0.87 (0.81–0.92)	<0.01
S. boydii	147 (16.65)	0.94 (0.91–0.97)	<0.01	96 (7.60)	0.91 (0.87–0.96)	<0.01
S. sonnei	221 (25.03)	1.13 (1.10–1.16)	<0.01	162 (12.83)	1.16 (1.12–1.20)	<0.01

aOR: adjusted odds ratio, adjusted for age and sex