Table 1.
Baseline characteristics by COPD exacerbation status
| COPD exacerbation status | |||
|---|---|---|---|
| Exacerbator (n=70) | Non-exacerbator (n=66) | p-values | |
| Age (years), mean (SD) | 66.8 (7.2) | 67.5 (5.5) | 0.511 |
| Sex | |||
| Male | 67 (96%) | 65 (98%) | 0.620 |
| Race | |||
| White | 62 (89%) | 58 (88%) | >0.999 |
| Black or African American | 5 (7.1%) | 7 (11%) | 0.682 |
| American Indian or Alaska Native | 3 (4.3%) | 1 (1.5%) | 0.620 |
| Education | 0.349 | ||
| Some high school | 4 (5.7%) | 1 (1.5%) | |
| High school graduate or GED | 20 (29%) | 23 (35%) | |
| Some college credit | 23 (33%) | 18 (27%) | |
| Trade/technical training | 13 (19%) | 17 (26%) | |
| College graduate | 4 (5.7%) | 6 (9.1%) | |
| Some postgraduate work | 2 (2.9%) | 0 (0%) | |
| Postgraduate degree | 4 (5.7%) | 1 (1.5%) | |
| BMI (kg/m2) | 0.216 | ||
| <18.5 | 1 (1.4%) | 0 (0%) | |
| 18.5–24.9 | 11 (16%) | 11 (17%) | |
| 25–29.9 | 24 (34%) | 14 (21%) | |
| ≥30 | 34 (49%) | 41 (62%) | |
| Tobacco | |||
| Active smoker | 18 (26%) | 17 (26%) | >0.999 |
| Pack years, mean (SD)a | 50 (24) | 47 (21) | 0.409 |
| Chew or snuff | 2 (2.9%) | 1 (1.5%) | >0.999 |
| Spirometryb | 0.026 | ||
| FEV1 50–70% predicted | 24 (35%) | 37 (56%) | |
| FEV1 30–50% predicted | 36 (52%) | 26 (39%) | |
| FEV1 <30% predicted | 9 (13%) | 3 (4.5%) | |
| Comorbidities | |||
| Diabetes | 16 (23%) | 22 (33%) | 0.242 |
| GERD | 23 (33%) | 20 (30%) | 0.892 |
| Alcohol use | 29 (41%) | 23 (35%) | 0.430 |
| Inhaler use | |||
| Inhaled corticosteroid | 57 (81%) | 32 (48%) | <0.001 |
| Anticholinergic inhalers | 59 (84%) | 27 (41%) | <0.001 |
Notes: aOne non-exacerbator was missing this measure. Percentages are of non-missing. bOne exacerbator was missing this measure. Percentages are of non-missing.