Table 2 Demographics and clinical characteristics 12 months prior to MITT initiation by MITT persistence.
MITT persistence (N = 754) | MITT step down (N = 361) | MITT discontinuation (N = 89) | |
---|---|---|---|
Demographics | |||
Female, n (%) | 513 (68.0) | 273 (75.6) | 65 (73.0) |
Age at asthma diagnosis, mean (SD) | 45.13 (15.6) | 45.4 (16.3) | 45.37 (16.2) |
Age at MITT initiation, mean (SD) | 55.30 (13.2) | 54.0 (14.5) | 54.25 (15.2) |
Years from diagnosis to MITT, mean (SD) | 10.17 (9.2) | 8.6 (8.2) | 8.88 (8.5) |
Urban location, n (%) | 642 (85.1) | 309 (85.6) | 72 (80.9) |
Smoking status, n (%) | |||
Non-smoker | 439 (58.2) | 218 (60.4) | 51 (57.3) |
Smoker | 134 (17.8) | 52 (14.4) | 22 (24.7) |
Former smoker | 153 (20.3) | 79 (21.9) | 15 (16.9) |
Unknown | 28 (3.7) | 12 (3.3) | 1 (1.1) |
BMIa | n = 388 | n = 213 | n = 39 |
BMI, mean (SD) kg/m2 | 30.3 (6.1) | 30.2 (6.3) | 30.0 (6.4) |
Spirometryb mean (SD) | n = 244 | n = 124 | n = 19 |
FEV1 % predicted value | 69.4 (18.9) | 72.9 (19.0) | 74.2 (21.2) |
FEV1/FVC ratio | 69.1 (13.1) | 71.5 (12.6) | 74.5 (14.7) |
Common comorbidities, n (%) | |||
Anxiety/depression | 281 (37.3) | 150 (41.6) | 28 (31.5) |
Pneumonia | 42 (5.6) | 11 (3.0) | 4 (4.5) |
Other respiratory infections | 225 (29.8) | 118 (32.7) | 30 (33.7) |
Rhinitis | 142 (18.8) | 74 (20.5) | 16 (18.0) |
Hypertension | 254 (33.7) | 125 (34.6) | 30 (33.7) |
Diabetes mellitus | 90 (11.9) | 41 (11.4) | 8 (9.0) |
Gastroesophageal reflux | 71 (9.4) | 36 (10.0) | 5 (5.6) |
Conjunctivitis | 67 (8.9) | 44 (12.2) | 10 (11.2) |
Polyposis | 53 (7.0) | 21 (5.8) | 2 (2.2) |
Severe exacerbationsc, n (%) | 421 (55.8) | 199 (55.1) | 47 (52.8) |
Blood eosinophils (%), mean (SD) | n = 453 4.0 (3.5) | n = 232 4.4 (3.4) | n = 47 3.0 (1.9) |