Figure 1. Prevalence of Low-Risk and High-Risk HPV Types Among Females Aged 14 to 59 Years, NHANES 2003-2004

HPV indicates human papillomavirus; NHANES, National Health and Nutrition Examination Survey. Error bars indicate 95% confidence intervals. Both low-risk and high-risk HPV types were detected in some females. Low-risk HPV types are defined as HPV type 6, 11, 32, 40, 42, 44, 54, 55, 61, 62, 64, 71, 72, 74, 81, 83, 84, 87, 89, and 91; and high-risk HPV types as HPV type 16, 18, 26, 31, 33, 35, 39, 45, 51, 52, 53, 56, 58, 59, 66, 67, 68, 69, 70, 73, 82, 85, and IS39.