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. 2016 Mar 18;11(3):e0151996. doi: 10.1371/journal.pone.0151996

Table 1. Differences in CMV IgM Seroprevalence among Women Aged 12–49 Years by Selected Demographic Factors, NHANES III, 1988–1994.

All women IgG+ women
IgM+ Sample size Prevalence (95% CI) P value IgM+ Sample size Prevalence (95% CI) P value
Overall 121 5714 2.8 (2.1–3.6) NA 118 4001 4.9 (3.4–6.4) NA
Race/ethnicity 0.11 <0.001
Non-Hispanic white 52 1825 3.1 (2.0–4.1) 50 892 6.1 (3.8–8.3)
Non-Hispanic black 44 2013 2.2 (1.5–2.8) 43 1582 2.7 (1.9–3.5)
Mexican American 25 1876 1.6 (0.6–2.6) 25 1527 2.0 (0.8–3.2)
Age 0.05 0.04
12–19 years 37 1445 2.4 (1.1–3.6) 37 810 5.3 (2.4–8.2)
20–29 years 48 1574 4.1 (2.7–5.5) 46 1104 7.3 (4.7–9.9)
30–49 years 36 2695 2.4 (1.2–3.5) 35 2087 3.7 (1.8–5.7)
Household income level 0.29 0.48
High 17 990 2.0 (0.5–3.5) 17 516 4.5 (1.1–8.0)
Middle 54 2185 3.3 (2.4–4.2) 51 1468 5.4 (3.7–7.2)
Low 37 2070 2.7 (1.7–3.8) 37 1647 4.0 (2.4–5.5)
Education 0.27 0.78
Completed 11th grade or less 39 2057 3.9 (2.3–5.4) 36 1693 4.6 (2.2–6.9)
Completed high school 47 1850 3.1 (2.1–4.1) 47 1258 5.5 (3.7–7.2)
College or higher 34 1767 2.2 (0.9–3.5) 34 1018 4.7 (2.0–7.4)
Family size 0.19 0.09
1–2 38 1207 3.9 (1.8–6.1) 37 811 6.7 (3.1–10.2)
3–4 46 2452 2.5 (1.6–3.4) 45 1622 4.9 (3.1–6.7)
5+ 37 2055 2.0 (1.1–3.0) 36 1568 2.9 (1.5–4.3)
Insurance 0.74 0.88
Government 18 993 2.8 (0.4–5.2) 18 787 4.0 (0.6–7.4)
Private 79 3567 2.7 (1.8–3.7) 76 2263 5.1 (3.1–7.0)
Uninsured 24 1154 3.6 (1.5–5.7) 24 951 4.9 (2.0–7.9)
Area of residence 0.56 0.73
Urban 50 2875 2.5 (1.1–4.0) 50 2074 4.6 (1.9–7.3)
Non-urban 71 2839 3.1 (2.2–3.9) 68 1927 5.2 (3.6–6.7)
Census region 0.31 0.28
Northeast 18 609 3.6 (2.3–4.9) 17 373 7.5 (3.4–11.5)
Midwest 28 1104 3.0 (1.7–4.2) 27 691 5.3 (3.1–7.6)
South 48 2527 2.9 (1.1–4.6) 47 1850 4.5 (1.8–7.2)
West 27 1474 1.9 (0.9–2.9) 27 1087 3.4 (1.3–5.4)
Birthplace NA NA
United States 116 4656 3.0 (2.1–3.8) 113 3028 5.3 (3.7–6.9)
Mexico 3 836 0.3 (0.0–0.6) 3 784 0.3 (0.0–0.7)
Other country 2 208 2.2 (0.0–5.7) 2 177 2.9 (0.0–7.6)
Have child aged ≤6 years at home 0.79 0.96
Yes 47 2186 3.0 (1.8–4.2) 47 1694 4.9 (3.0–6.9)
No 74 3528 2.8 (1.8–3.7) 71 2307 4.9 (2.9–6.8)
Marital status* 0.04 0.11
Married 46 2713 2.2 (1.6–2.9) 44 1972 3.8 (2.4–5.2)
Single 38 1550 4.5 (1.7–7.4) 37 1214 6.8 (2.5–11.1)

NA: not applicable.

* in women aged ≥20 years only.