TABLE 2.

Demographics of coronavirus seropositivity using secondary, higher-limit seropositivity cutoff valuesa

DemographicTotal no. of subjects (n = 196)229EHKU1NL63OC43
No. of positive subjects (%) (n = 49 [25%])P valueNo. of positive subjects (%) (n = 49 [25%])P valueNo. of positive subjects (%) (n = 52 [26.5%])P valueNo. of positive subjects (%) (n = 51 [26.0%])P value
Age (yr)0.2570.0780.1050.130
    20-299329 (31.2)30 (32.3)32 (34.4)29 (31.2)
    30-39437 (16.3)5 (11.6)7 (16.3)7 (16.3)
    40-49347 (20.6)8 (23.5)8 (23.5)6 (17.6)
    ≥50266 (23.1)6 (23.1)5 (19.2)9 (34.6)
Race0.5590.5160.0770.024b
    African American5612 (21.4)17 (30.4)19 (33.9)22 (39.3)
    Caucasian12933 (25.6)29 (22.5)28 (21.7)26 (20.2)
    Other114 (36.4)3 (27.3)5 (45.5)3 (27.3)
Gender0.3450.3450.7780.617
    Male7115 (21.1)15 (21.1)18 (25.4)17 (23.9)
    Female12534 (27.2)34 (27.2)34 (27.2)34 (27.2)
Maternal education0.1820.5310.037b0.199
    <12 yr303 (10.0)8 (26.7)4 (13.3)7 (23.3)
    12 yr (high-school graduate)7418 (24.3)14 (18.9)14 (18.9)19 (25.7)
    12-16 yr (1-3 yr of college)3010 (33.3)10 (33.3)12 (40.0)10 (33.3)
    16 yr (college graduate)4010 (25.0)10 (25.0)14 (35.0)6 (15.0)
    >16 yr (postcollegiate)228 (36.4)7 (31.8)8 (36.4)9 (40.9)
Smoking status0.6930.2360.7940.030b
    Smoker4412 (27.3)14 (31.8)11 (25.0)17 (38.6)
    Nonsmoker15237 (24.3)35 (23.0)41 (27.0)34 (22.4)
Season0.001b0.1350.0001b0.011b
    Winter (Dec-Feb)394 (10.3)10 (25.6)5 (12.8)8 (20.5)
    Spring (Mar-May)71 (14.3)1 (14.3)0 (0.0)0 (0.0)
    Summer (June-Aug)7932 (40.5)26 (32.9)35 (44.0)30 (38.0)
    Fall (Sept-Nov)7112 (16.9)12 (16.9)12 (16.9)13 (18.3)
  • a Cutoff values established using the 75th percentile cutoff from the adult data.

  • b Significant difference at the listed P value among categories within the demographic variable.