Table 1.
Independent variables according to the International Classification of Functioning, Disability and Health (ICF).
| ICFCategorization | Variables | Scores | Periods |
|---|---|---|---|
|
Body Structure and Function |
Medical conditions (5 items at 2 levels; 1 item at 4 levels) | 6 (worst) – 14 (best) | T1, T3 |
| Change in medical conditions | T3-T1 (- means decline) | ||
| Functional limitations (12 items at 2 levels) | 12 (worst) – 24 (best) | T1, T3 | |
| Change in functional limitations | T3-T1 (- means decline) | ||
| Memory problems before lockdown (2 levels) | 1 (yes) – 2 (no) | T1 | |
| Cognitive difficulties during lockdown (3 items at 2 levels) | 3 (worst) – 6 (best) | T3 | |
| Feeling of happiness (2 levels) | 1 (happy) – 2 (not happy) | T1, T3 | |
| Change in feeling of happiness | T3-T1 (-+ means decline) | ||
| Perceived energy level (2 levels) | 1 (high) – 2 (low) | T1, T3 | |
| Activities | PA level (10 levels) | 1 (any) – 10 (very active) | T3 |
| PA weekly frequency (4 levels) | 1 (never) – 4 (very often) | T3 | |
| PA weekly hours (4 levels) | 1 (very little) – 4 (a lot) | T3 | |
| Participation | Perceived degree of confinement | 0 (no) – 100 (fully) | T3 |
| Perceived degree of isolation (3 levels) | 3 (never) – 9 (often) | T3 | |
|
Personal Factors |
Age (years) | T1, T2, T3 | |
| Level of Education (2 levels: University / College or lower) | T3 |
Note. T1 = December 2019; T2 = June 2020; T3 = January 2021; PA = physical activity.