Sample size and power calculations for detecting changes in malaria transmission using antibody seroconversion rate

Table 5 Minimum sample size to detect a change in transmission with 80, 90 and 95 % probability using AIC and under the assumption of a known or unknown true change point

			Assumption on the true change point
			Known			Unknown
SCR before^a	SCR after^a	True change point^b	80 %	90 %	95 %	80 %	90 %	95 %
0.0969	0.324	3	475	797	1284	660	1158	1942
		5	356	562	857	441	707	1091
		10	355	541	798	445	742	1187
	0.0108	3	208	271	345	257	358	485
		5	112	156	212	148	215	304
		10	91	123	163	100	144	201
0.0324	0.0108	3	1324	2669	5091	1759	3236	5675
		5	748	1322	2234	997	1706	2798
		10	617	1104	1886	809	1513	2693
	0.0036	3	443	755	1234	695	1118	1731
		5	260	365	498	340	488	681
		10	182	229	283	219	275	339

ISSN: 1475-2875