Table 2.
Population-weighted demographic and pathogen characteristics of the study population in the National Health and Nutrition Examination Survey, 2003–2004 and 2009–2010
| Wave 1 | Wave 2 | |
|---|---|---|
| 2003–2004 | 2009–2010 | |
| (N = 2168) | (N = 2546) | |
| Age | ||
| Mean age (s.d.) | 34.9 (0.30) | 34.7 (0.21) |
| N (%) | N (%) | |
| Sex | ||
| Female | 1130 (50) | 1365 (52) |
| Race/Ethnicity | ||
| Non-Hispanic White | 1045 (69) | 1127 (62) |
| Non-Hispanic Black | 500 (12) | 427 (12) |
| Mexican American | 471 (10) | 538 (12) |
| Other Hispanic | 82 (4) | 299 (7) |
| Other race | 70 (4) | 155 (7) |
| Education | ||
| Less than high school | 484 (15) | 655 (18) |
| High school graduate | 569 (27) | 588 (22) |
| Some college | 676 (34) | 772 (32) |
| College graduate and above | 439 (25) | 531 (28) |
| Ever smoker | ||
| Yes | 975 (48) | 1073 (42) |
| No | 1193 (52) | 1473 (58) |
| Body Mass Index (BMI) | ||
| Under weight (<18.5) | 41 (2) | 43 (2) |
| Normal (⩾18.5; <25) | 703 (34) | 772 (32) |
| Overweight (⩾25, <30) | 709 (33) | 788 (31) |
| Obese (⩾30) | 715 (31) | 943 (35) |
| Pathogens seropositivity | ||
| Herpes simplex virus Type 1 | 1397 (60) | 1637 (57) |
| Herpes simplex virus Type 2 | 472 (19) | 566 (15) |
| Human papolomavirus | 542 (25) | 945 (34) |
| Toxoplasmosis | 296 (13) | 372 (12) |
| Human immunodeficiency virus | 13 (0.44) | 14 (0.37) |
| Cytomegalovirus | 1315 (52) | NM |
| Syphillis | 51 (2) | NM |
NM, not measured.