. 2018 Oct 29;17:392. doi: 10.1186/s12936-018-2507-y

Table 3.

Sporozoite index of Anopheles gambiae s.l.

Districts	Sites	May	June	July	August	October	January	February	Mean	Mean	Mean (7 months)	CI 95%	p-value
Districts	Sites	(DS)	(RS)	(RS)	(RS)	(RS)	(DS)	(DS)	(DS)	(RS)	Mean (7 months)	CI 95%	p-value
Kandi	Sonsoro*
	Thorax	38	119	175	166	244	10	29	77	704	781		0.212
	Thorax+	6	6	9	4	30	0	0	6	49	55
	SI	15.79	5.04	5.14	2.41	12.30	0	0	7.79^a	6. 96^a	7.042	[5.34–9.06]
	Kossarou
	Thorax	7	4	6	16	49	2	4	13	75	88
	Thorax+	1	0	0	0	8	1	0	2	8	10
	SI	14.29	0	0	0	16.33	50	0	15.38^a	10.67^a	11.36	[5.58–19.90]
	Total
	Thorax	45	123	181	182	293	12	33	90	779	869
	Thorax+	7	6	9	4	38	1	0	8	57	65
	SI	15.56	4.88	4.97	2.20	12.97	8.33	0	8.89^a	7.32^a	7.47	[5.81–9.43]
Gogounou	Gounarou*
	Thorax	7	8	33	93	167	22	22	51	301	352		0.0016
	Thorax+	0	1	2	10	27	0	1	1	40	41
	SI	0	12.50	6.06	10.75	16.17	0	4.55	1.96^a	13.29^b	11.65	[8.48–15.46]
	Bantansoue
	Thorax	0	23	64	72	71	33	30	63	230	293
	Thorax+	0	1	1	2	5	3	1	4	9	13
	SI	–	4.35	1.56	2.78	7.04	9.09	3.33	6.35^a	3.91^a	4.44	[2.38–7.46]
	Total
	Thorax	7	31	97	165	238	55	52	114	531	645
	Thorax+	0	2	3	12	32	3	2	5	49	54
	SI	0	6.45	3.09	7.27	13.45	5.45	3.85	4.39^a	9.23^a	8.37	[6.35–10.78]
Total (Alibori region)	Thorax	52	154	278	347	531	67	85	204	1310	1514
	Thorax+	7	8	12	16	70	4	2	13	106	119
	SI	13.46	5.19	4.32	4.61	13.18	5.97	2.35	6.37^a	8.09^a	7.86	[6.55–9.33]
Djougou	Barienou*
	Thorax	56	57	251	198	145	51	171	278	651	929		0.223
	Thorax+	15	4	6	25	16	3	15	33	51	84
	SI	26.79	7.02	2.39	12.63	11.03	5.88	8.77	11.87^a	7.83^a	9.04	[7.27–11.07]
	Zountori
	Thorax	0	0	33	59	41	18	6	24	133	157
	Thorax+	0	0	1	5	2	1	0	1	8	9
	SI	–	–	3.03	8.47	4.88	5.56	0	4.17^a	6.02^a	5.73	[2.65–10.60]
	Total
	Thorax	56	57	284	257	186	69	177	302	784	1086
	Thorax+	15	4	7	30	18	4	15	34	59	93
	SI	26.79	7.02	2.46	11.67	9.68	5.80	8.47	11.26^a	7.53^a	8.56	[6.96–10.38]
Copargo	Kataban*
	Thorax	13	189	274	284	198	35	56	104	945	1049		1
	Thorax+	0	8	16	34	21	3	0	3	79	82
	SI	0	4.23	5.84	11.97	10.61	8.57	0	2.88^a	8.36^a	7.81	[6.26–9.61]
	Kparakouna
	Thorax	1	11	27	61	21	4	14	19	120	139
	Thorax+	0	0	0	6	5	0	0	0	11	11
	SI	0	0	0	9.84	23.81	0	0	0^a	9.16^a	7.91	[4.01–13.71]
	Total
	Thorax	14	200	301	345	219	39	70	123	1065	1188
	Thorax+	0	8	16	40	26	3	0	3	90	93
	SI	0	4	5.32	11.59	11.87	7.69	0	2.44^a	8.45^b	7.83	[6.36–9.50]
Total (Donga region)	Thorax	70	257	585	602	405	108	247	425	1849	2274
	Thorax+	15	12	23	70	44	7	15	37	149	186
	SI	21.43	4.67	3.93	11.63	10.86	6.48	6.07	8.71^a	8.06^a	8.18	[7.08–9.38]
Total (rural areas)	Thorax	114	373	733	741	754	118	278	510	2601	3111		0.086
	Thorax+	21	19	33	73	94	6	16	43	219	262
	SI	18.42	5.09	4.50	9.85	12.47	5.08	5.76	8.43^a	8.42^a	8.42	[7.46–9.45]
Total (urban areas)	Thorax	8	38	130	208	182	57	54	119	558	677
	Thorax+	1	1	2	13	20	5	1	7	36	43
	SI	12.50	2.63	1.54	6.25	10.99	8.77	1.85	5.88^a	6.45^a	6.35	[4.63–8.46]
Grand total	Thorax	122	411	863	949	936	175	332	629	3159	3788
	Thorax+	22	20	35	86	114	11	17	50	255	305
	SI	18.03	4.87	4.06	9.06	12.18	6.29	5.12	7.95^a	8.07^a	8.05	[7.20–8.96]

SI: sporozoite index; CI: confidence interval; *: rural area; DS: dry season; RS: rainy season

^a,bThe SI/season of the same site bearing different letters are statistically different