Table 1.
Characteristics of cases and controls in group 1*
| Characteristics | Cases (%) | Controls (%) | P-value | OR (95% CI) |
|---|---|---|---|---|
| Subjects (n) | 22 | 22 | ||
| CMV-seropositive (n) | 7 (31.8) | 7 (31.8) | 0.7518 | 1.000 (0.230–4.345) |
| Mean age (years ± SD) | 17.3±1.3 | 16.8±1.3 | 0.0118 | |
| Gender | ||||
| Males (n) | 4 (18.2) | 4 (18.2) | ND | |
| Females (n) | 18 (81.8) | 18 (81.8) | ND | |
| Currently sexually active (n) | 17 | 0 | ND | |
| Last sexual activity (months ± SD) | 3.2± 6 | – | ND | |
| Age at first sexual activity, years (mean ± SD) | 14.2±2 | – | ND | |
| Sexual partners (n) | ||||
| <1 | 0 | – | ND | |
| 1–2 | 15 | – | ND | |
| 3–4 | 2 | – | ND | |
| >4 | 3 | – | ND | |
| Condom use | ||||
| Never | 0 | – | ND | |
| Sometimes | 9 | – | ND | |
| Always | 11 | – | ND | |
| Using birth control (n) | 14 | 6 | 0.0961 | 3.333 (0.858–18.849) |
| History of an STD (n) | 22 | 0 | ND | |
| Age at first STD, years (mean ± SD) | 16.8±1.6 | – | ND | |
| HIV tested (n) | 11 | 1 | 0.0094 | 11.000 (1.599–473.475) |
| Pregnant (n) | 3 | 0 | ND | |
| Family income | ||||
| <$20,000 | 6 | 11 | 0.6868 | |
| $20,000–$40,000 | 3 | 3 | 0.6618 | |
| $40,000–$60,000 | 2 | 1 | 0.5487 | |
| $60,000–$80,000 | 0 | 1 | 1.000 | |
| Medical insurance | 12 | 18 | 1.000 | |
| Parental education | ||||
| <High school | 0 | 1 | 1.000 | |
| High school/GED | 11 | 9 | 0.045 | 11 (1.1–104) |
| College | 1 | 8 | 0.0492 | 8.8 (0.9–83) |
| Siblings at home (n) | 5 | 2 | 0.2074 | |
| Ages of siblings at home, years | 12 | 19 | 0.2074 | |
| Siblings <5 | 1 | 1 | 1.000 | |
| Siblings 5–12 | 5 | 1 | 0.3544 | |
| Siblings >12 | 7 | 5 | 0.6424 | |
Notes:
*
Sexual activity defined by either specific laboratory findings (syphilis, gonorrhea, chlamydia, herpes simplex virus, pregnancy) or nonspecific laboratory findings (human papilloma virus, bacterial vaginosis, self-reported sexually transmitted infection, pregnant partner) and reported sexual activity.
Abbreviations: CI, confidence interval; CMV, cytomegalovirus; OR, odds ratio; SD, standard deviation; GED, General Educational Development; HIV, human immunodeficiency virus; STD, sexually transmitted disease; ND, not done.