Table 2 Distribution of scores and internal consistency of AQLQ-J and AQLQ-S
AQLQ-J | AQLQ-S | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Symptoms | Environmental Stimuli | Emotional Function | Activity Limitation | Total | Breathlessness | Mood | Social | Concerns | Total | |
Items [n] | 5 | 3 | 3 | 4 | 15 | 5 | 5 | 7 | 3 | 20 |
Mean | 5.06 | 5.38 | 5.18 | 5.97 | 5.39 | 0.83 | 0.99 | 0.52 | 0.76 | 0.80 |
Median | 5.20 | 5.67 | 5.33 | 6.25 | 5.60 | 0.60 | 0.80 | 0.29 | 0.57 | 0.70 |
SD | 1.15 | 1.24 | 1.48 | 1.12 | 1.04 | 0.60 | 0.76 | 0.68 | 0.66 | 0.58 |
Participants with missing items [%] | 4.79 | 4.79 | 5.48 | 5.48 | 6.16 | 5.48 | 5.48 | 4.79 | 5.48 | 5.48 |
Theoretical range | 1-7 | 1-7 | 1-7 | 1-7 | 1-7 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 |
Observed range | 1.80-7.00 | 1.33-7.00 | 1.00-7.00 | 1.50-7.00 | 1.67-7.00 | 0-3.00 | 0-3.80 | 0-4.00 | 0-3.57 | 0.05-3.35 |
‘Floor’ [%]* | 0 | 0 | 1.45 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
‘Ceiling’ [%]** | 1.44 | 10.79 | 10.87 | 25.36 | 0.73 | 5.80 | 10.90 | 26.62 | 12.32 | 0 |
Cronbach’s alpha | 0.85 (N=139) | 0.61 (N=139) | 0.82 (N=138) | 0.89 (N=138) | 0.92 (N=137) | 0.83 (N=138) | 0.85 (N=138) | 0.91 (N=139) | 0.77 (N=139) | 0.93 (N=138) |