Table 4 Asthma questionnaire’s reliability analysis, item-total statistics
Asthma SQ | Scale Mean if Item Deleted | Scale Variance if Item Deleted | Corrected Item-Total Correlation | Cronbach’s Alpha if Item Deleted |
|---|---|---|---|---|
Item 1 | 2.81 | 5.264 | 0.451 | 0.686 |
Item 2 | 2.78 | 5.309 | 0.374 | 0.701 |
Item 3 | 2.51 | 4.844 | 0.449 | 0.684 |
Item 4 | 2.21 | 4.710 | 0.380 | 0.710 |
Item 5 | 2.79 | 5.047 | 0.485 | 0.677 |
Item 6 | 2.90 | 5.328 | 0.442 | 0.689 |
Item 7 | 2.58 | 4.799 | 0.493 | 0.672 |
Asthma PQ | ||||
Item 1 | 2.09 | 5.769 | 0.593 | 0.774 |
Item 2 | 2.06 | 5.602 | 0.576 | 0.774 |
Item 3 | 1.89 | 5.379 | 0.533 | 0.781 |
Item 4 | 1.77 | 5.498 | 0.395 | 0.811 |
Item 5 | 2.00 | 5.526 | 0.580 | 0.773 |
Item 6 | 2.17 | 6.022 | 0.558 | 0.781 |
Item 7 | 1.95 | 5.363 | 0.584 | 0.772 |
Item 8 | 2.18 | 6.299 | 0.441 | 0.795 |