Table 1. Characteristics of patients with Mycobacterium avium complex infection and study controls, Philadelphia, Pennsylvania, USA, 2010–2012*.
| Characteristic | Patients, n = 26 | Controls, n = 11 |
|---|---|---|
| Age, y | ||
| 40–49 | 1 | 4 |
| 50–59 | 2 | 0 |
| 60–65 | 4 | 3 |
| 66–69 | 3 | 1 |
| 70–75 | 3 | 2 |
| 76–79 | 2 | 1 |
| >80 | 11 | 0 |
| Median (range) |
77 (44–90) |
64 (40–77) |
| Race | ||
| White | 25 (97) | 11 (100) |
| Black |
1 (3) |
0 |
| Tobacco use | ||
| Lifetime nonsmoker | 15 (58) | 8 (73) |
| Current smoker | 0 | 0 |
| Former smoker | 11 (42) | 3 (27) |
| Pack-years, no. | ||
| 5–10 | 4 | 0 |
| 11–20 | 4 | 2 |
| 21–30 | 1 | 1 |
| 31–40 | 0 | 0 |
| >40 |
2 |
0 |
| Preexisting lung disease† | ||
| Present | 3 (12) | 3 (27) |
| Absent | 23 (88) | 8 (73) |
*Values are no. (%) except as indicated. Only female patients were included in the study. †Lung disease recognized before diagnosis of nontuberculous mycobacteria infection.