TABLE 1.
Characteristics of Eligible Study Participants by Syphilis Serostatus in Wake County, NC (2009–2012)
| Characteristic* | All Participants (n = 239) | Syphilis IgG Positive (n = 45) | Syphilis IgG Negative (n = 194) | P† |
|---|---|---|---|---|
| Mean age (SD), y | 42.5 (12.9) | 49.5 (10.5) | 40.9 (12.9) | G0.01 |
| Race‡ | 0.02 | |||
| Black, non-Hispanic | 178 (77) | 42 (93) | 136 (73) | G0.01 |
| White, non-Hispanic | 11 (5) | 0 | 11 (6) | 0.13 |
| Hispanic | 42 (18) | 3 (7) | 39 (21) | 0.03 |
| Native American | 3 (1) | 0 | 3 (2) | 1.0 |
| Sex | 0.50 | |||
| Male | 140 (59) | 24 (53) | 116 (60) | |
| Female | 99 (41) | 21 (47) | 78 (40) | |
| Foreign-born | 43 (18) | 3 (7) | 40 (21) | 0.03 |
| Prior incarceration | 158 (66) | 34 (76) | 124 (64) | 0.16 |
| Homeless (ever) | 90 (38) | 21 (47) | 69 (36) | 0.18 |
| Median (IQR) no. sexual partners in previous year | 1 (1–3) | 1 (1–3) | 1 (1–2) | 0.54 |
Values are presented as n (%) or mean (SD) or median (IQR).
*
Totals for each variable may not add up to 100% secondary to observations with missing data.
†
Significance tests for comparisons between syphilis seropositive and seronegative results based on 2-sample t test for parametric, Mann-Whitney test for nonparametric continuous patient characteristics, and Pearson χ2 or Fisher exact test for categorical patient characteristics.
‡
Because participants were allowed to report more than 1 race/ethnicity, total categories may exceed 100%.