Usual care | Lung age | Contingency management | Lung age + contingency management | p-value | |
---|---|---|---|---|---|
N | 26 | 24 | 26 | 24 | |
Age, years | 52.3 (7.2) | 46.1 (8.9) | 51.2 (7.5) | 49.2 (8.7) | 0.09 |
Female, n (%) | 11 (42) | 10 (42) | 17 (65) | 9 (38) | 0.18 |
African American race, n (%) | 24 (92) | 18 (75) | 26 (100) | 21 (88) | 0.03 |
Current IDU, n (%) | 3 (12) | 8 (33) | 6 (23) | 4 (17) | 0.27 |
Current non-IDU, n (%) | 7 (27) | 8 (33) | 7 (27) | 10 (42) | 0.64 |
Current alcohol use, n (%) | 15 (58) | 12 (50) | 12 (46) | 12 (50) | 0.87 |
More than 1 drink a day per week, n (%) | 15 (58) | 12 (50) | 12 (46) | 12 (50) | 0.37 |
Alcohol or drug treatment in last 6 months, n (%) | 9 (35) | 10 (42) | 4 (15) | 9 (38) | 0.19 |
HIV infected, n (%) | 6 (23) | 4 (17) | 4 (15) | 6 (25) | 0.83 |
Age first smoked | 16.2 (5.0) | 16.1 (5.4) | 17.1 (5.8) | 14.9 (4.4) | 0.79 |
Pack-years, med (IQR) | 19.1 (13.7-32) | 18.4 (14.1-22.8) | 17.8 (11.5-31.0) | 20.3 (11.0-35.5) | 0.74 |
Smoking >1 pack per day, n (%) | 5 (19) | 4 (17) | 3 (12) | 5 (21) | 0.68 |
Smokers in home, n (%) | 18 (69) | 20 (83) | 15 (58) | 19 (79) | 0.18 |
Fagerstrom score, med (IQR) | 4 (2–5) | 3.5 (2–4) | 3.5 (2–5) | 4 (3–5.5) | 0.54 |
Pulmonary diagnoses | |||||
Asthma, n (%) | 6 (23) | 5 (21) | 8 (31) | 5 (22) | 0.84 |
COPD, n (%) | 3 (12) | 4 (17) | 2 (8) | 2 (9) | 0.79 |
Both, n (%) | 7 (27) | 7 (29) | 9 (35) | 5 (22) | 0.79 |
FEV1 | |||||
Absolute (L) | 2.58 (0.88) | 2.58 (0.78) | 2.42 (0.62) | 2.72 (0.94) | 0.74 |
% predicted | 87.2 (20) | 84.1 (19) | 86.5 (14) | 93.7 (21) | 0.42 |
FVC, (L) | |||||
Absolute (L) | 3.58 (1.27) | 3.45 (0.96) | 3.18 (0.73) | 3.62 (1.13) | 0.57 |
% predicted | 96.2 (17) | 90.8 (14) | 91.4 (12) | 99.5 (16) | 0.14 |
FEV1/FVC ratio | 0.72 (0.11) | 0.74 (0.10) | 0.76 (0.06) | 0.75 (0.09) | 0.62 |
Lung age | -- | 60.7 (16) | -- | 54.2 (19.8) | 0.31 |
Difference btw lung age and actual age, median (IQR) | -- | 12.5 (5.5 to 28.5) | -- | 11.0 (-10 to 18.5) | 0.12 |