Table 2.

Characteristics of sIgAD/CVID Cases and Their Matched Controls

Variables	Case (n=39)	All Controls (n=156)	P value	Community Controls (n=78)	P value	Lab Controls (n=78)	P value
Male (%)	20 (51.3)	80 (51.3)	>.99	40 (51.3)	>.99	40 (51.3)	>.99
Age at Disease Occur (year) Mean±SD† Median	34.2±24.2 32.0	34.2±23.9 32.5	.99	34.2±24.0 32.0	>.99	34.2±23.9 33.0	.99
Caucasians (%)§	33 (97.1)	133 (91.7)	.28	65 (91.6)	.29	68 (91.9)	.31
Educational level ¶ (%)
≤ High School degree	24 (61.5)	109 (69.9)	.33	63 (80.8)	.08	46 (59.0)	.61
Some college	4 (10.3)	22 (14.1)		7 (9.0)		15 (19.2)
College degree	7 (18.0)	14 (9.0)		4 (5.1)		10 (12.8)
Graduate school degree	4 (10.3)	11 (7.1)		4 (5.1)		7 (9.0)
Asthma prior to index date, n (%)	9 (23.1)	16 (10.3)	.03	7 (9.0)	.04	9 (11.5)	.10
Asthma ever, n (%)	12 (30.8)	18 (11.5)	.01	7 (9.0)	.01	11 (14.1)	.03
Comorbid conditions	9 (23.1)	18 (11.5)	.06	10 (12.8)	.16	8 (10.3)	.06

^†SD: standard deviation;

^§: 16 subjects were missed (5 subjects from case, 7 subjects from community control and 4 subjects from lab control);

^¶: Chisquare test for trend; Lab: Controls selected from the Immunology Lab. Database