Table 2. LTBI treatment completion among patients with an indication for LTBI treatment, New York City Department of Health and Mental Hygiene chest clinics during QFT-G (2006–2008) and TST (2004–2006) utilization periods.
| Completed treatment | Did not complete treatment | |||||
|---|---|---|---|---|---|---|
| (N = 1,700) | (N = 3,547) | |||||
| N | % | N | % | aRRQ/T e | ||
| Test Type | ||||||
| QFT-G | 490 | 40 | 740 | 60 | 1.75 (1.49–2.06) | |
| TST | 1,210 | 30 | 2,807 | 70 | Ref | |
| Sex | ||||||
| Female | 853 | 32 | 1821 | 68 | — | |
| Male | 847 | 33 | 1726 | 67 | — | |
| Age group (years) | ||||||
| 1–4 | 7 | 33 | 14 | 67 | 2.31 (1.44–3.72) | |
| 5–9 | 35 | 50 | 35 | 50 | 3.19 (2.30–4.44) | |
| 10–14 | 170 | 45 | 209 | 55 | 2.99 (2.33–3.85) | |
| 15–19 | 353 | 39 | 555 | 61 | 2.52 (1.93–3.29) | |
| 20–49 | 962 | 30 | 2,198 | 70 | 2.05 (1.72–2.46) | |
| 50–65 | 160 | 25 | 469 | 75 | 1.73 (1.37–2.18) | |
| >65 | 13 | 16 | 67 | 84 | Ref | |
| Race/Ethnicity | ||||||
| Non-Hispanic white | 64 | 22 | 223 | 78 | Ref | |
| Hispanic (Any) | 658 | 35 | 1,235 | 65 | 1.41 (1.22–1.64) | |
| Non-Hispanic black | 458 | 26 | 1,281 | 74 | 1.22 (0.93–1.59) | |
| Asian | 443 | 42 | 620 | 58 | 1.63 (1.39–1.90) | |
| Other a | 77 | 29 | 188 | 71 | 1.29 (1.07–1.57) | |
| Country of birth b | ||||||
| US | 222 | 24 | 711 | 76 | Ref | |
| Foreign | 1477 | 34 | 2834 | 66 | 1.18 (1.01–1.38) | |
| Time in US (foreign-born only) b | ||||||
| 0–1 years | 637 | 38 | 1020 | 62 | Ref | |
| 1–5 years | 371 | 36 | 674 | 65 | 0.95 (0.87–1.06) | |
| >5years | 469 | 29 | 1,140 | 71 | 0.81 (0.74–0.90) | |
| Primary Language | ||||||
| English | 668 | 27 | 1,808 | 73 | Ref | |
| Non-English | 1,032 | 37 | 1,739 | 63 | 1.13 (1.05–1.22) | |
| Contact to an active TB case | ||||||
| Yes | 170 | 45 | 212 | 56 | 1.35 (1.14–1.59) | |
| No | 1,530 | 31 | 3,335 | 69 | Ref | |
QFT-G = QuantiFERON-TB Gold, TST = tuberculin skin test
a Excludes 2205 patients who had both TST and QFT-G performed
b Includes Native American, Pacific Islander
c 60 patients were missing a country of birth and 1 foreign-born patient was missing time in the US.
d Contacts were those exposed to a patient with infectious TB disease and were tested as part of a NYC DOHMH contact investigation. Non-contacts included patients tested for any other reason.
e Estimates of relative risk were adjusted for age at test, reason for test, primary language (English, not English), birth in the US, race/ethnicity and year that the test was performed. Sex was excluded based on the results of the bivariate analysis.