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. 2011 Nov;18(11):1895–1899. doi: 10.1128/CVI.05228-11

Table 2.

Prevalence estimates (weighted) for CMV IgG low avidity by age among the 126 IgM+ sera from the NHANES national survey

Age of women (yr) No. tested Median % positive (95% CI) by test cutoff for low aviditya
0.8 0.7 0.6
12–19 36 67.4 (35.3–88.6) 33.0 (11.6–64.9) 12.3 (2.9–40.1)
20–29 52 30.7 (16.8–49.1) 16.5 (7.1–33.8) 10.4 (3.8–25.6)
30–49 38 17.1 (7.1–35.7) 3.1 (0.6–14.0) 3.1 (0.6–14.0)
All ages 126 31.1 (20.1–44.6) 13.5 (6.1–27.5) 7.6 (3.5–15.9)
a

P values for trends with age were 0.004, 0.048, and 0.3 for cutoff values of 0.8, 0.7, and 0.6, respectively. 95% CI, 95% confidence intervals.