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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Epidemiol Infect. 2015 Sep 22;144(5):927–939. doi: 10.1017/S0950268815002174

Table 3.

Estimated incidence of severe diarrhoea due to cholera in catchment areas of diarrhoeal disease surveillance hospitals in Bangladesh, 2010–2011

Dhaka
 Mirpur
 Matlab*
 Kumudini
 Chhatak
 Mathbaria
Characteristics <5yr All ages <5yr All ages <5 yr All ages <5yr All ages <5yr All ages <5yr All ages
Population in
hospital
catchment areas
(in thousands)
(Cpop)		 870 10 368 80 993 20 225 22 247 24 176 18 186
Total/projected
cholera cases in
surveillance
hospital from
catchment areas
(Vc)† 		2850 16 950 340 1640 41 257 21 51 47 264 52 148
Proportion of
severe diarrhoea
cases admitted
to surveillance
hospital (P)
(95% CI)‡ 		0·66
(0·59–0·73)		 0·62
(0·55–0·69)		 0·39
(0·29–0·48)		 0·33
(0·24–0·43)		 - - 0·92
(0·88–0·95)		 0·70
(0·55–0·86)		 0·51
(0·37–0·65)		 0·40
(0·27–0·54)		 0·90
(0·85–0·96)		 0·44
(0·27–0·60)
Incidence of V.
cholerae/1000
population
(95% CI)§ 		5·0
(4·5–5·6)		 2·6
(2·4–3·0)		 11·0
(8·8–14·7)		 4·9
(3·8–6·9)		 2·6 1·1 1·0
(1·0–1·1)		 0·3
(0·2–0·4)		 3·8
(3·0–5·1)		 3·7
(2·8–5·6)		 3·2
(3·0–-3·4)		 1·8
(1·3–2·9)

Cpop, Population in the hospital catchment area; Vc, total or estimated V. cholerae 01/0139 cases over 12 months in a surveillance hospital; P, proportion of severe diarrhea cases in hospital catchment area that were admitted to a surveillance hospital; CI, confidence interval.

*

Incidence was estimated from hospital-based surveillance data directly; no correction factor was applied.

†

Reported surveillance period for Dhaka, Mirpur, Matlab and Kumudini hospitals, March 2010-February 2011; for Chhatak Hospital, October 2010-September 2011, and for Mathbaria Hospital, December 2010-November 2011.

‡

Adjusted for cluster effect using linear mixed effect model.

§

Incidence was calculated using formula (1); value of Vc was used from Figure 2 and value of P was used from Table 1.