. 2011 Jul 1;204(1):19–26. doi: 10.1093/infdis/jir223

Table 2.

Associations Between Prior Plasmodium falciparum Exposure and Antibody Levels

	CSP		LSA-1		AMA-1		MSP-1		MSP-3
	Relative level^a (95%CI)	P	Relative level^a (95%CI)	P	Relative level^a (95%CI)	P	Relative level^a (95%CI)	P	Relative level^a (95%CI)	P
Age (per 5 year increase)	1.38 (1.04–1.84)	.02	1.86 (1.39–2.50)	<.001	3.60 (2.65–4.90)	<.001	1.43 (1.02–2.02)	.04	2.06 (1.57–2.70)	<.001
Living within 25m of swamp	1.72 (1.19–2.50)	.004	1.86 (1.26–2.73)	.002	1.89 (1.27–2.83)	.002	1.68 (1.07–2.63)	.02	1.54 (1.08–2.19)	.02
Prior malaria incidence (per case/person year)	1.20 (1.07–1.35)	.003	1.38 (1.22–1.56)	<.001	1.53 (1.34–1.73)	<.001	1.23 (1.07–1.42)	.004	1.11 (.99–1.24)	.07

NOTE. CI, confidence interval; associations with log-transformed antibody responses were estimated with multivariate linear regression.

Relative level indicates fold change in antibody level, e.g. a relative level of 2 indicates a doubling of antibody levels.