Table 3. Clinical characteristics grouped by serious inhaler error category (0 versus ≥ 1).
| Clinical characteristic | Total N (%) (n = 623) | 0 error (– = 282) | ≥1 errors (n = 341) | p value | |
|---|---|---|---|---|---|
| Patient-reported prior inhaler review by HCPb, n (%) | 297 (48) | 150 (53) | 147 (43) | 0.012 | |
| Patient self-assessment of inhaler technique, n (%), known | (n = 588 [94]) | 270 (96) | 318 (93) | ||
| Very poor to poor | 24 (4) | 11 (4) | 13 (4) | 0.024 | |
| Fair to average | 122 (21) | 43 (16) | 79 (25) | ||
| Good to excellent | 442 (75) | 216 (80) | 226 (71) | ||
| ATAQ asthma control, n (%), known | (n = 622 [100]) | 282 (100) | 340 (99.7) | ||
| Poor control | 137 (22) | 47 (17) | 90 (27) | 0.012 | |
| Partial control | 469 (75) | 228 (81) | 241 (71) | ||
| Good control | 16 (3) | 7 (3) | 9 (3) | ||
| Adherence to therapyc, n (%) | |||||
| Poor | 202 (37) | 84 (34) | 118 (40) | 0.087 | |
| Borderline | 18 (3) | 5 (2) | 13 (4) | ||
| Good | 320 (59) | 156 (64) | 164 (56) | ||
| Adherence to therapy in the Netherlandsd, n (%), known | (n = 59 [71]) | 26 (70.3) | 33 (72) | ||
| Poor | 2 (3) | 2 (7.7) | 0 (0) | 0.12 | |
| Borderline | 0 | 0 (0) | 0 (0) | ||
| Good | 57 (97) | 24 (92.3) | 33 (100) | ||
| Acute courses of oral corticosteroidsb, n (%) | |||||
| 0 | 380 (61) | 183 (65) | 197 (58) | 0.13 | |
| 1 | 139 (22) | 58 (21) | 81 (24) | ||
| 2 | 59 (10 | 27 (10) | 32 (9) | ||
| ≥3 | 45 (7) | 14 (5) | 31 (9) | ||
| Severe exacerbationsb,e, n (%), known | (n = 622 [100]) | 282 (100) | 340 (99.7) | ||
| 0 | 355 (57) | 176 (62) | 179 (53) | 0.044 | |
| 1 | 132 (21) | 55 (20) | 77 (23) | ||
| ≥2 | 135 (22) | 51 (18) | 84 (25) | ||
| Hospitalizationsb, n (%) | |||||
| 0 | 531 (85) | 255 (90) | 276 (81) | 0.008 | |
| 1 | 42 (7) | 10 (4) | 32 (9) | ||
| 2 | 21 (3) | 8 (3) | 13 (4) | ||
| ≥3 | 28 (5) | 9 (3) | 19 (6) | ||
Abbreviations: ATAQ, Asthma Therapy Assessment Questionnaire; FEV1, forced expiratory volume in 1 second; HCP, health care practitioner; PEF, peak expiratory flow.
a χ 2 test.
bIn the year before an iHARP respiratory consultation.
cNumber (%) calculated as percentage of patients from the UK, Italy, Spain, Australia, Sweden, France and Norway (n = 245 for 0 serious errors and n = 295 for ≥1 serious error).
dNumber (%) calculated as percentage of known patients from the Netherlands (n = 37 for 0 serious errors and n = 46 for ≥1 serious error).
eNumber (%) calculated as percentage of known.