TABLE 1.

Demographics of coronavirus seropositivity using primary seropositivity cutoff valuesa

DemographicTotal no. of subjects (n = 196)229EHKU1NL63OC43
No. of positive subjects (%) (n = 179 [91.3%])P valueNo. of positive subjects (%) (n = 116 [59.2%])P valueNo. of positive subjects (%) (n = 180 [91.8%])P valueNo. of positive subjects (%) (n = 178 [90.8%])P value
Age (yr)0.3570.2110.5230.944
    20-299388 (94.6)62 (66.7)88 (94.6)85 (91.4)
    30-394337 (86.0)22 (51.2)38 (88.4)39 (90.7)
    40-493430 (88.2)17 (50.0)30 (88.2)30 (88.2)
    ≥502624 (92.3)15 (57.7)24 (92.3)24 (92.3)
Race0.8040.029b0.6900.493
    African American5650 (89.3)39 (69.6)50 (89.3)53 (94.6)
    Caucasian129119 (92.2)68 (52.7)120 (93.0)115 (89.1)
    Other1110 (90.9)9 (81.8)10 (90.9)10 (90.9)
Gender0.6570.0690.2320.789
    Male7164 (90.1)36 (50.7)63 (88.7)65 (91.5)
    Female125115 (92.0)80 (64.0)117 (93.6)113 (90.4)
Maternal education0.4980.8460.8580.912
    <12 yr3027 (90.0)18 (60.0)27 (90.0)27 (90.0)
    12 yr (high-school graduate)7469 (93.2)40 (54.1)69 (93.2)66 (89.2)
    12-16 yr (1-3 yr of college)3025 (83.3)19 (63.3)28 (93.3)27 (90.0)
    16 yr (college graduate)4037 (92.5)25 (62.5)37 (92.5)37 (92.5)
    >16 yr (postcollegiate)2221 (95.5)14 (63.6)19 (86.4)21 (95.5)
Smoking status0.9110.7380.3790.981
    Smoker4440 (90.9)27 (61.4)39 (88.6)40 (90.9)
    Nonsmoker152139 (91.5)89 (58.6)141 (92.8)138 (90.8)
Season0.8860.1130.4840.946
    Winter (Dec-Feb)3935 (89.7)29 (74.4)35 (89.7)36 (92.3)
    Spring (Mar-May)76 (85.7)3 (42.9)6 (85.7)6 (85.7)
    Summer (June-Aug)7972 (91.1)47 (59.5)71 (89.9)72 (91.1)
    Fall (Sept-Nov)7166 (93.0)37 (52.1)68 (95.8)64 (90.1)
  • a Cutoff values established using children's data means plus 5 standard deviations.

  • b Significant difference at P ≤ 0.05 among categories within the demographic variable.