Table 2.
Demographic differences in STI by each time period using data from NAMCS.
| Year (N = Unweighted # of Visits) | 2005–2008 (N = 110) |
2009–2012 (N = 241) |
2013–2016 (N = 246) |
p-Value |
|---|---|---|---|---|
| Weighted number of visits | 4,419,914 | 7,604,358 | 7,502,703 | N/A |
| Weighted proportion of visits N% (95% CI:) | ||||
| Age categories | <0.01 | |||
| 15–24 years | 35.3 (24.2–46.5) | 30.0 (22.0–379) | 13.9 (7.7–20.2) | |
| 25–44 years | 36.2 (26.0–45.5) | 50.9 (43.5–58.3) | 65.1 (55.6–74.7) | |
| 45–64 years | 28.4 (17.9–38.9) | 19.1 (13.2–25.0) | 20.9 (12.2–29.6) | |
| Sex | 0.44 | |||
| Female | 74.8 (64.7–84.8) | 64.0 (54.6–73.3) | 56.0 (44.1–68.0) | |
| Male | 25.2 (15.2–35.3) * | 36.0 (26.7–45.4) | 44.0 (32.0–55.9) | |
| Race | 0.03 | |||
| White | 66.9 (55.6–78.1) | 69.6 (60.4–79.3) | 71.3 (61.7–80.9) | |
| Black | 27.0 (15.5–38.5) | 27.4 (18.0–36.8) | 22.1 (13.3–30.8) | |
| Other | 6.1 (0.9–11.4) * | 2.8 (0.4–5.1) * | 6.7 (1.4–11.9) * | |
| Ethnicity | <0.01 | |||
| Hispanic | 13.6 (6.9–20.2) * | 13.6 (7.1–20.2) | 19.9 (11.4–28.3) | |
| Not Hispanic | 86.4 (79.8–93.0) | 86.4 (79.8–92.9) | 80.1 (71.7–88.6) | |
| Insurance | <0.01 | |||
| Private | 68.3 (53.6–83.0) | 62.9 (51.8–74.0) | 60.3 (48.8–71.8) | |
| Medicare/Medicaid | 17.3 (5.0–29.6) | 22.4 (14.2–30.5) | 25.0 (14.4–35.6) | |
| others/missing | 14.3 (3.9–24.7) | 14.7 (5.1–24.3) | 14.7 (6.1–23.3) | |
| Region | 0.37 | |||
| Northeast | 12.8 (5.7–20.0) | 15.3 (9.0–21.7) | 17.3 (7.9–26.7) | |
| Midwest | 19.7 (8.5–30.9) | 13.3 (8.1–18.6) | 19.2 (11.3–27.1) | |
| South | 47.5 (33.3–61.7) | 54.9 (45.5–64.4) | 35.7 (24.6–46.7) | |
| West | 20.0 (10.3–29.6) | 16.4 (10.0–228) | 27.8 (16.0–39.6) | |
| HIV diagnosis | 1.0 (0.0–3.3) * | 3.8 (0.0–8.5) * | 3.7 (0.4–7.0) * | 0.66 |
HIV: human immunodeficiency virus. * = data with unweighted frequencies <30 or relative standard error >30 (interpret cautiously). Boldface indicates statistical significance (p < 0.05).