Table 2.

Antibody, antigen, and microfilariae prevalence by sex (adjusted for sampling design and standardised by age), Samoa 2018.

	Total population				Purposively selected PSUs						Randomly selected PSUs						P-value 1	P-value 2	P-value 3
	Male		Female		Male			Female			Male			Female
	N	%	N	%	N	%	95% CI	N	%	95% CI	N	%	95% CI	N	%	95% CI
Ag	68	4.5	49	2.9	17	11.7	(10.3-13.3)	14	8.2	(4.5-14.5)	51	4.2	(3.0-5.8)	35	2.8	(1.4-5.3)	0.17	<0.001	0.06
Bm14 Ab	323	25.1	260	15.3	65	44.8	(42.5-47.0)	60	27.6	(18.9-38.3)	258	24.5	(19.8-29.9)	200	14.8	(11.7-18.6)	<0.001	0.001	0.02
Bm33 Ab	825	53.9	834	48.0	134	69.2	(62.8-74.9)	163	63.9	(51.3-74.8)	691	53.5	(47.1-59.7)	671	47.4	(40.5-54.4)	0.37	0.01	0.08
Wb123 Ab	545	37.5	442	26.5	91	55.4	(49.1-61.5)	93	40.1	(30.6-50.4)	454	37.0	(30.7-43.9)	349	25.9	(20.2-32.7)	<0.001	0.02	0.045
Any Abs	957	61.5	932	53.9	146	73.3	(68.3-77.8)	171	67.9	(53.6-79.5)	811	61.2	(54.9-67.2)	761	53.4	(46.1-60.6)	0.09	0.02	0.16
Any Ag or Ab	960	61.6	932	53.9	148	75.3	(68.7-81.0)	171	67.9	(53.6-79.5)	812	61.2	(54.9-67.2)	761	53.4	(46.1-60.6)	0.08	0.01	0.16

Ag: Antigen; Ab: Antibody; CI: Confidence Interval; PSU: Primary Sampling Unit.

P-value 1: Testing for significant differences between sex in all participants included in the study; P-value 2: Testing for significant differences between in prevalence between male participants in randomly and purposively selected PSUs; P-value 3: Testing for significant differences in prevalence between female participants in randomly and purposively selected PSUs.