Table 2. Characteristics of 662 persons initiating isoniazid treatment for latent tuberculosis infection.
| 95% Confidence Interval | ||||
|---|---|---|---|---|
| n | % or Mean of Total | Lower | Upper | |
| Pre-Treatment Testing Pattern | ||||
| One TST | 339 | 51.21% | 47.39% | 55.01% |
| One IGRA | 191 | 28.85% | 25.52% | 32.43% |
| One TST followed by one IGRA | 58 | 8.76% | 6.83% | 11.17% |
| Other pattern of multiple TSTs and/or IGRAs | 74 | 11.18% | 8.99% | 13.82% |
| Sex | ||||
| Female | 358 | 54.08% | 50.26% | 57.85% |
| Male | 304 | 45.92% | 42.15% | 49.74% |
| Age Group | ||||
| 0–14 | 88 | 13.29% | 10.91% | 16.11% |
| 15–29 | 182 | 27.49% | 24.22% | 31.03% |
| 30–44 | 184 | 27.79% | 24.51% | 31.34% |
| 45–64 | 208 | 31.42% | 27.99% | 35.07% |
| Census Region | ||||
| Northeast | 210 | 31.72% | 28.28% | 35.38% |
| Midwest | 101 | 15.26% | 12.71% | 18.21% |
| South | 94 | 14.20% | 11.74% | 17.08% |
| West | 257 | 38.82% | 35.17% | 42.60% |
| Patient Location | ||||
| Large Central Metro County (Urban) | 313 | 47.28% | 43.49% | 51.10% |
| Large Fringe Metro County (Suburban) | 253 | 38.22% | 34.58% | 41.99% |
| Any Smaller County | 96 | 14.50% | 12.01% | 17.40% |
| % of Households Under FPL in County | ||||
| <15% | 374 | 56.50% | 52.68% | 60.24% |
| ≥15% | 288 | 43.50% | 39.76% | 47.32% |
| Insurance Type | ||||
| HMO | 98 | 14.80% | 12.29% | 17.73% |
| POS | 473 | 71.45% | 67.88% | 74.77% |
| PPO | 91 | 13.75% | 11.32% | 16.59% |
| Supply of Isoniazid Received on Date of 1st Fill | ||||
| < 2 month supply | 611 | 92.30% | 90.00% | 94.10% |
| ≥2 month supply | 51 | 7.70% | 5.90% | 10.00% |
| Period Regimen Started | ||||
| 2011 Q3-4 | 142 | 21.45% | 18.48% | 24.75% |
| 2012 Q1-4 | 261 | 39.43% | 35.76% | 43.21% |
| 2013 Q1-4 | 227 | 34.29% | 30.76% | 38.00% |
| 2014 Q1 | 32 | 4.83% | 3.44% | 6.76% |
| State TB Rate/100,000 | - | 3.89 | 3.78 | 4.00 |
| % Foreign Born in County | - | 20.95 | 20.00 | 21.91 |
| Count of Clinical Risk Factors* | ||||
| None | 407 | 61.48% | 57.70% | 65.12% |
| 1 | 192 | 29.00% | 25.66% | 32.59% |
| 2 or more | 63 | 9.52% | 7.50% | 12.01% |
* Clinical risk factors included diabetes, tobacco use, a history or late effects of TB, contact with or exposure to TB, HIV, and immune-suppressive medication use.
Abbreviations
HIV: Human immunodeficiency virus
HMO: Health maintenance organization
IGRA: Interferon gamma release assay
POS: Place of service
PPO: Preferred provider organization
Q1: Quarter 1 of the calendar year
Q1-4: Quarters 1–4 of the calendar year (full year)
Q3-4: Quarters 3 and 4 of the calendar year
TB: Tuberculosis
TST: Tuberculin skin test