Table 1.
Demographics and baseline characteristics of participants with at least one bacterial culture at baseline
| Total (N) | Overall (N = 830) | |
|---|---|---|
| Sex, n (%) | 829 | |
| Female | 681 (82) | |
| Age, yr | 828 | |
| Mean (SD) | 64 (14) | |
| Age at diagnosis, yr | 734 | |
| Mean (SD) | 56 (17) | |
| Prior diagnoses, n (%) | ||
| Ever had a tuberculosis diagnosis | 806 | 26 (3) |
| Ever had a positive pulmonary nontuberculous mycobacterial culture | 804 | 471 (59) |
| Ever diagnosed with alpha-1 antitrypsin deficiency | 804 | 24 (3) |
| Ever diagnosed with a primary immunodeficiency | 809 | 46 (6) |
| Ever diagnosed with Kartagener’s or primary ciliary dyskinesia | 814 | 42 (5) |
| Ever diagnosed with a rheumatologic disease | 804 | 69 (9) |
| Ever diagnosed with ulcerative colitis or Crohn’s disease | 814 | 22 (3) |
| Ever diagnosed with allergic bronchopulmonary mycosis | 48 | 5 (10) |
| Tobacco use, n (%) | 826 | |
| Past or present | 317 (38) | |
| Never | 509 (62) | |
| Pulmonary exacerbations in the past 2 yr, n (%) | 796 | |
| Yes | 536 (67) | |
| Prebronchodilator FEV1 (L) at entry | 750 | |
| Mean (SD) | 1.79 (0.72) | |
| Prebronchodilator FEV1 (% predicted) at entry | 740 | |
| Mean (SD) | 70 (22) |
Definition of abbreviations: FEV1 = forced expiratory volume in 1 second; SD = standard deviation.