Table 1.
Baseline characteristics according to length of U.S. residence at initial visit for LTBI therapy
| Length of U.S. Residence | ||||||
| Total (n, %) | Median Time in Months (IQR) | < 1 year (n, %) | 1–5 years (n, %) | > 5 years (n, %) | p value | |
| Total | 1465 | 5 (2–30) | 899 (61.4) | 336 (22.9) | 230 (15.7) | |
| Gender | ||||||
| Male | 673 (46.0) | 4 (2–24) | 448 (66.6) | 140 (20.8) | 85 (12.6) | < 0.001 |
| Female | 789 (54.0) | 7 (0.2–77) | 449 (59.9) | 195 (24.7) | 145 (18.4) | |
| Age | ||||||
| Median (IQR) | 23 (15–32) | 20 (14–30) | 24 (17–32) | 30 (24–36) | < 0.001 | |
| < 35 yrs | 1180 (80.6) | 5 (2–28) | 741 (62.8) | 277 (23.5) | 162 (13.7) | |
| ≥ 35 yrs | 285 (19.5) | 5 (2–54) | 158 (55.4) | 59 (20.7) | 68 (23.9) | |
| Region of Origin | ||||||
| Africa | 839 (57.4) | 4 (2–14) | 604 (72.0) | 170 (20.3) | 65 (7.8) | < 0.001 |
| Latin America & Caribbean | 414 (28.3) | 28 (6–79) | 140 (33.8) | 138 (33.3) | 136 (32.9) | |
| Asia | 153 (10.7) | 4 (2–26) | 102 (66.7) | 24 (15.7) | 27 (17.7) | |
| Canada & Europe | 56 (3.8) | 2 (1–4) | 51 (91.1) | 3 (5.4) | 2 (3.6) | |
| Race/Ethnicity | ||||||
| White | 59 (4.0) | 2 (1–4) | 53 (89.8) | 4 (6.8) | 2 (3.4) | < 0.001 |
| Hispanic | 352 (24.1) | 25 (6–72) | 129 (36.7) | 119 (33.8) | 104 (29.6) | |
| Black | 876 (59.9) | 4 (2–18) | 603 (68.8) | 180 (20.6) | 93 (10.6) | |
| Other | 175 (12.0) | 4 (2–170) | 113 (64.6) | 32 (18.2) | 30 (17.1) | |
| TST size (mm) | ||||||
| Size (IQR) | 15 (12–20) | 15 (12–19) | 15 (13–20) | 16 (14–20) | 0.67 | |
| HIV status | ||||||
| Negative | 498 (34.0) | 2 (1–4) | 440 (88.3) | 30 (6.0) | 28 (5.6) | < 0.001 |
| Positive | 10 (0.7) | 10 (4–16) | 5 (50.0) | 3 (30.0) | 2 (20.0) | |
| Unknown | 957 (65.3) | 13 (4–49) | 454 (47.4) | 303 (31.7) | 200 (20.9) | |
| Referral | ||||||
| Immigration | 666 (46) | 2 (1–4) | 638 (95.8) | 24 (3.6) | 4 (0.6) | < 0.001 |
| Primary Medical Doctor | 121 (8.4) | 35 (12–90) | 28 (23.1) | 48 (39.7) | 45 (37.2) | |
| Other* | 662 (45.7) | 24 (7–64) | 226 (34.1) | 259 (39.1) | 177 (26.7) | |
* Other = self-referrals, walk-in patients