From: Development of a tool to recognize small airways dysfunction in asthma (SADT)
 | In-depth interview group | Focus group | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
 | With SAD (n= 7) | Without SAD (n= 3) |  | With SAD (n= 6) | Without SAD (n= 5) |  | ||||
 | median | (range) | median | (range) | p-value | median | (range) | median | (range) | p-value |
Age (years) | 45 | (25-73) | 52 | (20-63) | 0.833 | 54 | (25-73) | 47 | (36-51) | 0.247 |
Gender (female/male) | 5/2 | Â | 2/1 | Â | 1.000 | 5/1 | Â | 4/1 | Â | 1.000 |
BMI (kg/m2) | 28 | (23-39) | 36 | (32-38) | 0.117 | 29 | (23-52) | 32 | (24-38) | 0.792 |
Smoking (current/ex/never%) | 1/4/2 | Â | 1/1/1 | Â | 0.728 | 0/5/1 | Â | 0/1/4 | Â | 0.080 |
ICS (yes/no) | 5/2 | Â | 3/0 | Â | 1.000 | 4/2 | Â | 3/2 | Â | 0.497 |
FEV1 (%predicted) | 79 | (66-104) | 99 | (94-123) | 0.117 | 81 | (76-88) | 112 | (97-127) | 0.004 |
FEV1/FVC (%) | 62 | (52-73) | 83 | (81-89) | 0.017 | 64 | (52-77) | 83 | (80-88) | 0.004 |
FEF50% (%predicted) | 37 | (23-62) | 107 | (89-115) | NA | 40 | (23-55) | 114 | (82-122) | NA |
RV (%predicted) | 120 | (88-160) | 72 | (71-89) | 0.033 | 120 | (88-160) | 88 | (77-98) | 0.017 |
IOS R20 (kPa/l/s) | 0.39 | (0.29-0.50) | 0.33 | (0.32-0.40) | 0.517 | 0.39 | (0.34-0.67) | 0.38 | (0.26-0.49) | 0.429 |
IOS R5-R20 (kPa/l/s) | 0.27 | (0.10-0.44) | 0.19 | (0.11-0.25) | 0.383 | 0.25 | (0.14-0.29) | 0.05 | (0.01-0.08) | NA |
IOS X5 (kPa/l/s) | -0.22 | (-0.49;-0.12) | -0.23 | (-0.26;-0.11) | 1.000 | -0.23 | (-0.49;-0.22) | -0.07 | (-0.12;-0.06) | 0.004 |
PC20 methacholine# (mg/ml) | 1.1 | (0.1-6.4) | 3.5 | (1.3-23.9) | 0.183 | 1.13 | (0.14-5.55) | 9.8 | (2.8-20.9@) | 0.017 |
ACQ (total score) | 0.5 | (0.0-1.5) | 2.0 | (0.0-2.2) | 0.383 | 0.6 | (0.0-1.3) | 1.0 | (0.3-2.2) | 0.177 |
BHQ symptoms (score) | 0.4 | (0.0-2.5) | 1.8 | (0.3-3.1) | 0.383 | 1.3 | (0.0-2.7) | 1.9 | (1.3-2.7) | 0.329 |
BHQ stimuli (score) | 1.2 | (0.0-4.3) | 1.8 | (0.0-4.3) | 0.833 | 2.5 | (0.1-3.8) | 2.5 | (0.9-4.1) | 0.662 |