Table 2 Description of Measures included in the Analytical Framework
Measure | Number of items | Scale items | Gradations of each scale item | Range of composite Score | Scale reliability coefficient (Cronbach’s alpha) |
|---|---|---|---|---|---|
Life Satisfaction | Five | In most ways my life is close to ideal’; ‘The conditions of my life are excellent’; ‘I am satisfied with my life’; ‘So far, I have got the important things I want in life’; ‘If I could live my life again, I would change almost nothing” | 7 (1 = strongly disagree, 7 = strongly agree) | 1–7 | α = 0.90 (excellent) |
Poor Sleep Quality | Five | Trouble falling asleep, waking up at night and having trouble getting back to sleep, waking too early in the morning and not being able to fall asleep, feeling unrested during the day, and taking a nap during the day | 4 (1 = never, 4 = frequently, i.e., ≥ 5 nights per week) | 1–4 | α = 0.83 (good) |
Depressive Symptoms | Seven | Loss of interest, feeling tired, abnormal appetite, trouble concentrating, feeling of worthlessness, thinking about death and trouble falling asleep | 2 (0 = no, 1 = yes) | 0–7 | α = 0.70 (acceptable) |
Functional Limitations | Thirteen | Dressing, walking across the room, bathing, eating, getting in or out of bed, using the toilet (including getting up and down), preparing a hot meal (cooking and serving), shopping for groceries, making telephone calls, taking medications, doing work around the house or garden, managing money, such as paying bills and keeping track of expenses, getting around or finding address in unfamiliar place | 2 (0 = no, 1 = yes) | 0–13 | α = 91 (excellent) |