Weighted age-specific prevalence of cytomegalovirus (CMV) outcomes in the pediatric population aged 6–19 years, National Health and Nutrition Examination Survey, 1999–2004 (n = 9564). (A) Prevalence of CMV immunoglobulin (Ig)G antibody, (B) prevalence of urinary CMV shedding among the IgG-seropositive individuals, and (C) geometric mean urinary CMV viral loads among urinary CMV shedders were estimated accounting for the complex weighted survey design. Error bars reflect 95% confidence intervals estimated using Taylor series linearization and Rubin’s rules. Asterisks represent a P value less than .05, indicating a statistically significant difference compared with 6- to 8-year-olds. P values were calculated from a t test.