Table 2.
Asthma-related clinical characteristics.
| Asthma-related clinical characteristics | All (N = 3066)a | Primary care (n = 559) |
Specialists (n = 2498) |
||||
|---|---|---|---|---|---|---|---|
| Investigator-classified mild asthma (n = 260) | Investigator-classified moderate-to-severe asthma (n = 299) | All (n = 559) | Investigator-classified mild asthma (n = 289) | Investigator-classified moderate-to-severe asthma (n = 2209) | All (n = 2498) | ||
| Asthma duration (years) | |||||||
| Mean (SD) | 14.1 (14.5) | 21.46 (16.0) | 15.82 (14.5) | 18.44 (15.5) | 12.43 (13.6) | 13.23 (14.2) | 13.13 (14.1) |
| Median (min, max) | 9.0 (1.0, 83.0) | 17.0 (1.0, 68.0) | 11.0 (1.0, 65.0) | 13.0 (1.0, 68.0) | 8.0 (1.0, 65.0) | 8.0 (1.0, 83.0) | 8.0 (1.0, 83.0) |
| Number of severe asthma exacerbations 12 months before the study visit | |||||||
| Mean (SD) | 0.84 (1.8) | 0.93 (2.2) | 0.86 (1.6) | 0.89 (1.9) | 0.38 (1.2) | 0.89 (1.9) | 0.83 (1.8) |
| Number of severe asthma exacerbations 12 months before the study visit by group | |||||||
| 0 | 1917 (62.5) | 156 (60.0) | 186 (62.2) | 342 (61.2) | 237 (82.0) | 1333 (60.3) | 1570 (62.9) |
| 1 | 585 (19.1) | 52 (20.0) | 54 (18.1) | 106 (19.0) | 26 (9.0) | 452 (20.5) | 478 (19.1) |
| 2 | 241 (7.9) | 19 (7.3) | 27 (9.0) | 46 (8.2) | 12 (4.2) | 181 (8.2) | 193 (7.7) |
| 3 | 151 (4.9) | 21 (8.1) | 14 (4.7) | 35 (6.3) | 8 (2.8) | 108 (4.9) | 116 (4.6) |
| >3 | 172 (5.6) | 12 (4.6) | 18 (6.0) | 30 (5.4) | 6 (2.1) | 135 (6.1) | 141 (5.6) |
| GINA classification | |||||||
| Step 1 | 205 (6.7) | 98 (37.7) | 0 (0.0) | 98 (17.5) | 107 (37.0) | 0 (0.0) | 107 (4.3) |
| Step 2 | 344 (11.2) | 162 (62.3) | 0 (0.0) | 162 (29.0) | 182 (63.0) | 0 (0.0) | 182 (7.3) |
| Step 3 | 1003 (32.7) | 0 (0.0) | 166 (55.5) | 166 (29.7) | 0 (0.0) | 834 (37.8) | 834 (33.4) |
| Step 4 | 1234 (40.2) | 0 (0.0) | 119 (39.8) | 119 (21.3) | 0 (0.0) | 1109 (50.2) | 1109 (44.4) |
| Step 5 | 280 (9.1) | 0 (0.0) | 14 (4.7) | 14 (2.5) | 0 (0.0) | 266 (12.0) | 266 (10.6) |
| Level of asthma control | |||||||
| Well controlled | 1643 (53.6) | 146 (56.2) | 134 (44.8) | 280 (50.1) | 203 (70.2) | 1156 (52.3) | 1359 (54.4) |
| Partly controlled | 900 (29.4) | 67 (25.8) | 121 (40.5) | 188 (33.6) | 63 (21.8) | 646 (29.2) | 709 (28.4) |
| Uncontrolled | 523 (17.1) | 47 (18.1) | 44 (14.7) | 91 (16.3) | 23 (8.0) | 407 (18.4) | 430 (17.2) |
GINA, Global Initiative for Asthma; max, maximum; min, minimum; SD, standard deviation. Data are presented as n (%) unless otherwise specified.
a
Practice type was not recorded for 9 patients