Table 3.

Proportion positive with SARS-CoV-2 IgG

Characteristics	N	N Positive	Crude	p-value	Weighted*	Adjusted for test performance	p-value
Overall	2058	329	16.0(14.4;17.6)		15.9(14.4;17.4)	18.5(16.8;20.2)
Sex				0.29			0.60
Male	1207	188	15.6(13.6;17.6)		15.6(13.6;17.5)	18.0(15.8;20.2)
Female	851	141	16.6(14.1;19.1)		16.4(14.0;18.7)	19.2(16.6;21.8)
Age groups (years)				0.08			0.08
≤ 19	293	45	15.4(11.3;19.5)		15.0(11.2;18.8)	17.8(13.2;22.2)
20–29	403	47	11.7(8.6;14.8)		12.2(9.2;15.2)	13.5(10.2;16.8)
30–39	366	63	17.2(13.3;21.1)		17.1(13.5;20.7)	19.9(15.8;24.0)
40–49	360	69	19.2(15.1;23.3)		19.0(15.2;22.8)	22.2(17.9;26.5)
50–59	320	52	16.3(12.3;20.3)		15.7(11.9;19.5)	18.8(14.5;23.1)
≥ 60	200	37	18.5(13.1;23.9)		18.6(13.5;23.7)	21.4(15.7;27.1)
Governorates				< 0.0001			< 0.0001
Baalbek El-Hermel	112	33	29.5(21.1;37.9)		29.8(21.0;38.6)	34.1(25.3;42.9)
North Lebanon	163	30	18.4(12.5;24.3)		18.2(12.2;24.2)	21.3(15.0;27.6)
Bekaa	143	26	18.2(11.9;24.5)		18.0(11.5;24.5)	21.0(14.3;27.7)
Mount Lebanon	925	167	18.1(15.6;20.6)		18.1(15.8;20.4)	20.9(18.3;23.5)
South Lebanon	269	34	12.6(8.6;16.6)		12.6(9.5;15.7)	14.6(10.4;18.8)
Akkar	119	13	10.9(5.3;16.5)		11.2(5.2;17.2)	12.6(6.6;18.6)
Beirut	162	16	9.9(5.3;14.5)		10.1(5.3;14.9)	11.4(6.5;16.3)
Nabatieh	165	10	6.1(2.4;9.8)		6.1(2.2;10.0)	7.0(3.1;10.9)
Comorbidities				0.25			0.39
Yes	270	39	14.4(10.2;18.6)		16.2(12.1;20.3)	16.6(12.2;21.0)
No	1432	233	16.3(14.4;18.2)		14.1(12.4;15.8)	18.8(16.8;20.8)
History of positive PCR testing for SARS-CoV-2				< 0.0001			< 0.0001
Yes	60	38	63.3(51.1;75.5)		63.2(51.7;74.7)	73.3(62.1;84.5)
No	1642	234	14.3(12.6;16.0)		14.1(12.5;15.7)	16.5(14.7;18.3)

N number; %: percentage; IgG immunoglobulin G; CI confidence interval

*Weighted by age group, sex, and governorates