Table 1 Demographic distribution of antibody rates.

From: The antibody response to SARS-CoV-2 infection persists over at least 8 months in symptomatic patients

		counts	min	25 perc	50 perc	75 perc	max	mean	St.dev.	p value^a
Sex	F	1105	−3.39	−0.04	−0.02	0.02	16.32	0.07	0.61	0.0139
Sex	M	448	−0.88	−0.04	−0.02	0	10.37	0.03	0.53	0.0139
Age	21–30	300	−3.39	−0.04	−0.02	0.01	4.51	0.03	0.41	0.2644
	31–40	365	−0.92	−0.04	−0.02	0.01	2.26	0.02	0.21	0.2302
	41–50	455	−2.49	−0.04	−0.02	0.03	3.11	0.06	0.37	0.1083
	51–60	309	−0.88	−0.04	−0.01	0.02	16.32	0.1	0.96	0.1442
	60+	124	−0.68	−0.04	−0.02	−0.01	10.37	0.12	0.99	0.0586
BMI^b	18.5≤ BMI <25	940	−0.92	−0.04	−0.02	0.01	10.37	0.03	0.41	0.3821
	BMI ≥30	106	−3.39	−0.05	−0.02	0.14	16.32	0.23	1.69	0.2182
	25≤ BMI <30	347	−0.57	−0.04	−0.02	0.01	3.11	0.05	0.29	0.3933
	BMI <18.5	73	−0.22	−0.04	−0.02	0.02	1.27	0.05	0.26	0.3959
IgG class phase 1	IgG ≥12	613	−3.39	−0.08	0.02	0.23	16.32	0.18	0.92	2.1 E-10
	IgG ≤3.8	74	0.01	0.01	0.02	0.03	0.08	0.02	0.01	1.5 E-15
	3.8 < IgG <12	866	−0.13	−0.03	−0.02	−0.01	0.83	−0.02	0.04	8.0 E-22
Role	Other^c	200	−0.57	−0.04	−0.02	−0.01	16.32	0.09	1.17	0.0116
	Anesthesiologist	19	−0.83	−0.04	−0.02	0.01	0.09	−0.05	0.2	0.4305^d
	Biologist	18	−0.18	−0.05	−0.02	−0.02	0.03	−0.04	0.05	0.0978^d
	Surgeon	67	−0.88	−0.05	−0.02	0.07	0.61	0.02	0.21	0.2653
	Physiotherapist	21	−0.12	−0.04	−0.02	0.01	0.35	0.01	0.1	0.4204
	Nurse	398	−3.39	−0.04	−0.02	0.04	3.11	0.08	0.41	0.0581
	Physician	210	−0.92	−0.04	−0.01	0.02	10.37	0.08	0.75	0.0804
	Healthcare partner operator	149	−2.49	−0.03	−0.01	0.17	1.55	0.1	0.38	0.0009
	Front office (PARC)	108	−0.32	−0.04	−0.02	0.01	2.55	0.03	0.27	0.2892
	Researcher	50	−1.5	−0.03	−0.02	−0.01	4.51	0.06	0.68	0.1514
	Cleaning service	29	−0.65	−0.03	−0.02	0.03	1.72	0.09	0.41	0.2414
	Transport service	14	−0.39	−0.04	−0.01	0.02	2.22	0.13	0.62	0.4359^d
	Staff	188	−0.4	−0.04	−0.02	−0.01	0.98	0	0.15	0.0026
	Student	20	−0.19	−0.03	−0.02	−0.01	0.21	−0.02	0.08	0.3705^d
	Laboratory technician	31	−0.17	−0.03	−0.01	−0.01	0.51	0.02	0.15	0.3243
	Radiology technician	31	−0.18	−0.03	−0.02	0.01	1.01	0.04	0.22	0.4002
Site	Other^c	21	−0.19	−0.04	−0.02	−0.01	2.22	0.08	0.49	0.2080
	Casa di Cura Cellini	51	−0.17	−0.05	−0.03	−0.01	1.27	0.01	0.22	0.0111
	Clinica Fornaca di Sessant	47	−0.4	−0.05	−0.03	0	0.53	0	0.15	0.0833
	Humanitas Castelli	87	−0.28	−0.04	0.02	0.21	3.11	0.24	0.62	4.7 E-05
	Humanitas Gavazzeni	313	−0.88	−0.04	−0.01	0.15	10.37	0.13	0.68	0.0001
	Humanitas Gradenigo	109	−2.49	−0.04	−0.02	−0.01	0.67	−0.01	0.27	0.0586
	Humanitas Mater Domini	105	−0.17	−0.03	−0.02	−0.01	0.63	0	0.1	0.3412
	Humanitas Medical Care	23	−0.19	−0.04	−0.02	−0.01	0.02	−0.03	0.04	0.0969
	Humanitas Rozzano	667	−3.39	−0.04	−0.02	0	16.32	0.04	0.7	0.0338
	Humanitas San Pio X	98	−0.68	−0.03	−0.02	0	2.39	0.04	0.29	0.2968
	Humanitas University	32	−0.2	−0.04	−0.02	−0.01	0.19	−0.03	0.08	0.0590

^aWilcoxon–Mann–Whitney test.
^bSome subjects did not indicate their BMI.
^cRefers to volunteers and other professionals that operate in several structures.
^dMinority class is less or equal to 20 (Wilcoxon–Mann–Whitney test is not reliable).

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Table 1 Demographic distribution of antibody rates.

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