Community-based surveillance of malaria vector larval habitats: a baseline study in urban Dar es Salaam, Tanzania

BMC Public Health

Table 1 Detection coverage of different mosquito larval habitat categories and types by community-owned resource persons (CORPs).

Habitat Category	Habitat Type	Number detected			Coverage by CORPs surveys*
		CORPs	Inspectors	Total	Detected by CORPS (%)	OR	P
Natural Habitats
	Freshwater Swamp	10	15	25	40.0	1.00**	NA**
	Mangrove Swamp	1	2	3	33.3	NE	NE
	Marsh	21	29	50	42.0	1.09 [0.409–2.887]	0.868
	River bed	1	1	2	50.0	NE	NE
	Seepage	36	25	61	59.0	2.16 [0.836–5.58]	0.112
	Subtotal:	69	72	141	48.9	1.00**	NA**
Agricultural artificial habitats
	Ridge and furrow	20	47	67	29.9	0.64 [0.25–1.66]	0.357
	Rice paddy	16	19	35	45.7	1.26 [0.45–3.57]	0.660
	Other agriculture	17	53	70	24.3	0.48 [0.18–1.27]	0.139
	*Subtotal:*	53	*119*	*172*	*30.8*	*0.46 [0.29–0.73]*	*0.001*
Non-Agricultural artificial habitats
	Construction	38	43	81	46.9	1.33 [0.53–3.30]	0.544
	Drain	115	108	223	51.6	1.60 [0.69–3.71]	0.276
	Puddle	43	32	75	57.3	2.02 [0.80–5.07]	0.136
	Tyre track	28	18	46	60.9	2.33 [0.86–6.31]	0.095
	Water storage container	5	11	16	31.3	0.68 [0.18–2.56]	0.571
	Subtotal:	229	212	441	51.9	1.11 [0.76–1.63]	0.587
Uncategorized
	Other	67	165	232	28.9	0.61 [0.26–1.43]	0.252
	*Subtotal*	67	*165*	*232*	*28.9*	*0.42 [0.27–0.65]*	*<0.001*
Total		418	568	986	42.4	NA	NA

* The proportion of all habitats found by the combined observations of the CORPs and the inspecting team that had previously been found by the CORPs. Odds ratios (OR) and P values for the likelihood of detection by the CORPs were determined by logistic regression, treating habitat category or type as a determinant of detection.
** Reference group
NE Not estimated: excluded from logistic regression analysis because of insufficient observations.
NA Not Applicable

ISSN: 1471-2458