Table 3. Multivariable analysis of baseline factors for 28,997 RA patients with new-onset TB and NTM, Taiwan, 2001–2011* .
| Variables | aHR† | 95% CI | p value |
|---|---|---|---|
| TB | |||
| Age at entry, y | |||
| 18–44 | 1.00 | Reference | Reference |
| 45–64 | 1.96 | 1.45–2.65 | <0.0001 |
| >65 | 5.06 | 3.72–6.88 | <0.0001 |
| Sex | |||
| F | 1.00 | Reference | Reference |
| M | 2.35 | 1.97–2.81 | <0.0001 |
| Charlson Comorbidity Index score | |||
| 0 | 1.00 | Reference | Reference |
| 1 | 1.08 | 0.87–1.34 | 0.513 |
| 2 | 1.14 | 0.89–1.46 | 0.305 |
| >3 | 1.19 | 0.91–1.54 | 0.202 |
| Urbanization | |||
| Urban | 1.00 | Reference | Reference |
| Suburban | 1.09 | 0.84–1.40 | 0.525 |
| Rural |
1.19 |
0.98–1.45 |
0.087 |
| NTM | |||
| Age at entry, y | |||
| 18–44 | 1.00 | Reference | Reference |
| 45–64 | 2.25 | 0.91–5.53 | 0.078 |
| >65 | 4.70 | 1.82–12.13 | 0.001 |
| Sex | |||
| F | 1.00 | Reference | Reference |
| M | 2.64 | 1.52–4.60 | 0.001 |
| Charlson Comorbidity Index score | |||
| 0 | 1.00 | Reference | Reference |
| 1 | 1.64 | 0.85–3.19 | 0.143 |
| 2 | 1.31 | 0.59–2.94 | 0.509 |
| >3 | 1.01 | 0.39–2.64 | 0.983 |
| Urbanization | |||
| Urban | 1.00 | Reference | Reference |
| Suburban | 1.34 | 0.65–2.75 | 0.425 |
| Rural | 0.85 | 0.43–1.66 | 0.631 |
*aHR, adjusted hazard ratio; NTM, nontuberculous mycobacteria; RA, rheumatoid arthritis; TB, tuberculosis. †Adjusted for age, sex, Charlson Comorbidity Index score, and urbanization.