Table 5.
Reliability of the 22-item MacDQoL scale, with N/A items scored as zero (Cronbach's alpha = 0.9440)
| MacDQoL item |
Scale mean if item deleted |
Scale variance if item deleted |
Corrected item-total correlation |
Alpha if item deleted |
| household tasks | -71.92 | 1890.0 | 0.65 | 0.9414 |
| personal affairs | -71.19 | 1855.3 | 0.68 | 0.9408 |
| shopping | -71.53 | 1876.8 | 0.68 | 0.9410 |
| personal relationship | -74.74 | 1967.5 | 0.39 | 0.9446 |
| family | -72.93 | 1879.3 | 0.58 | 0.9426 |
| friends and social | -72.80 | 1875.0 | 0.66 | 0.9412 |
| appearance | -73.65 | 1915.5 | 0.54 | 0.9428 |
| do physically | -71.57 | 1858.6 | 0.72 | 0.9402 |
| get out and about | -71.32 | 1838.4 | 0.74 | 0.9399 |
| holidays | -73.16 | 1882.9 | 0.61 | 0.9419 |
| hobbies/leisure | -70.87 | 1874.7 | 0.71 | 0.9405 |
| confidence | -71.66 | 1879.3 | 0.63 | 0.9417 |
| motivation | -72.83 | 1876.9 | 0.68 | 0.9409 |
| people's reaction | -74.16 | 1918.8 | 0.55 | 0.9427 |
| future | -72.03 | 1909.2 | 0.52 | 0.9433 |
| financial situation | -74.89 | 1987.8 | 0.33 | 0.9452 |
| independence | -70.57 | 1822.7 | 0.80 | 0.9390 |
| do for others | -71.45 | 1847.3 | 0.71 | 0.9404 |
| mishaps | -72.31 | 1839.5 | 0.76 | 0.9397 |
| meals | -73.30 | 1882.1 | 0.68 | 0.9410 |
| time | -72.88 | 1870.7 | 0.69 | 0.9408 |
| nature | -72.08 | 1866.9 | 0.67 | 0.9410 |