School-based malaria prevalence: informative systematic surveillance measure to assess epidemiological impact of malaria control interventions in the Democratic Republic of the Congo

Table 1 Summary malaria prevalence surveys during intervention period from 2009 to 2014: number of schools selected from total and sample size from registered student population

Survey period	Schools operating in survey area		Students registered in the survey area			Schools sampled			Students sampled
Survey period	Total schools	Percentage of urban schools	Rural	Urban	Total	Rural	Urban	Total	Rural	Urban	Total
May-09	29	93	342	11,312	11,654	1	9	10	26	569	595
Oct-09	29	93	352	11,365	11,717	1	9	10	43	545	588
May-10	30	87	1203	11,977	13,180	2	16	18	39	689	728
Oct-10	38	89	1255	13,052	14,307	3	13	16	107	763	870
May-11	38	89	1319	16,927	18,246	4	20	24	132	879	1011
Oct-11	40	88	1364	16,801	18,165	5	19	24	128	971	1099
May-12	43	88	1428	18,475	19,903	5	20	25	117	979	1096
Oct-12^a	48	90	1124	16,305	17,429	5	20	25	116	1019	1135
May-13	48	90	1597	18,604	20,201	5	20	25	143	967	1110
Oct-13	52	90	1540	17,782	19,322	5	20	25	145	918	1063
May-14	54	91	1448	19,775	21,223	5	20	25	150	1041	1191
Oct-14	59	92	1389	18,923	20,312	5	20	25	154	988	1142

^aOctober 2012 survey excluded from final analysis as only RDT results are available

ISSN: 1475-2875