Summary statistics for symptoms (Q score and AQLQ) by PEF, BTS guidelines treatment step, and HAD depression
| Q score | AQLQ symptom | ||||||
|---|---|---|---|---|---|---|---|
| PEF | BTS step | HAD depression | % ⩾4 | Mean (SE) score | % ⩽ median of 4.9 | Mean (SE) score | |
| ⩽359 | 1–2 | ⩽ 4 | 20% (4/20) | 2.3 (0.4) | 35% (7/20) | 5.2 (0.2) | |
| >4 | 47% (8/17) | 3.6 (0.7) | 77% (13/17) | 3.8 (0.4) | |||
| 3–5 | ⩽ 4 | 40% (2/5) | 3.2 (0.8) | 40% (2/5) | 5.0 (0.6) | ||
| >4 | 79% (11/14) | 5.3 (0.7) | 93% (13/14) | 3.1 (0.3) | |||
| >359 | 1–2 | ⩽ 4 | 14% (3/22) | 1.3 (0.4) | 27% (6/22) | 5.4 (0.3) | |
| >4 | 6% (1/17) | 1.5 (0.3) | 53% (9/17) | 5.0 (0.5) | |||
| 3–5 | ⩽ 4 | 43% (3/7) | 3.3 (0.6) | 29% (2/7) | 5.3 (0.5) | ||
| >4 | 50% (3/6) | 4.3 (1.4) | 67% (4/6) | 4.0 (0.8) | |||
The higher the Q score, or the lower the AQLQ score, the greater the symptoms. Also the higher the HAD depression score, the worse the depression.
PEF = peak expiratory flow. HAD = Hospital Anxiety and Depression score.
PEF is split by the overall median of 359.
HAD depression score is split by the overall median of 4.