Table 2. Distribution of outcome, moderating and control variables across analytical data sets.
| Overall | Before 2020 | 2020 to 2022 | ||||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Mental health (Mental Component Summary ‘MCS’ of SF-12; 1 to 5) | 3.52 | 0.84 | 3.61 | 0.84 | 3.47 | 0.84 |
| Subdomains of MCS | ||||||
| Psychological well-being | 3.64 | 1.08 | 3.75 | 1.09 | 3.58 | 1.07 |
| Feeling calm | 3.41 | 1.06 | 3.46 | 1.07 | 3.38 | 1.05 |
| Vitality | 3.01 | 1.06 | 3.04 | 1.09 | 3.00 | 1.05 |
| Emotional stability | 4.01 | 1.11 | 4.21 | 1.07 | 3.92 | 1.11 |
| Inequality domains | ||||||
| Female (0/1) | 0.50 | - | 0.50 | - | 0.50 | - |
| Age (years) | 46.63 | 16.90 | 45.61 | 16.97 | 47.12 | 16.85 |
| Good pre-COVID-19 health status | 0.43 | - | 0.45 | - | 0.41 | - |
| Migrant (0/1) | 0.36 | - | 0.36 | - | 0.35 | - |
| High income (0/1) | 0.49 | - | 0.43 | - | 0.51 | - |
| Child under 15 (0/1) | 0.26 | - | 0.28 | - | 0.25 | - |
| High education | 0.21 | - | 0.20 | - | 0.22 | - |
| Covariates | ||||||
| Interview month (2–9) | 4.33 | - | 4.10 | - | 4.44 | - |
| Mode: CATI | 0.42 | - | 0.32 | - | 0.47 | - |
| Mode: CAPI, face to face | 0.24 | - | 0.68 | - | 0.03 | - |
| Mode: CAPI, by phone | 0.34 | - | 0.00 | - | 0.50 | - |
| Observations | 40020 | 12892 | 27128 |
Data: PASS data.