Table 3.
Weighted prevalence of social isolation before and during the COVID-19 pandemic by environmental factors.
| Variable | Category | Before (January 2020)% (95% CI) | During (August 2020)% (95% CI) | Difference | |
|---|---|---|---|---|---|
| Percentage Points (95% CI) | p | ||||
| Urbanization level | Highest (≥9686 people/km2) | 21.5 (20.6–22.5) | 28.7 (27.7–29.8) | 7.2 (6.5–8.0) | 0.070 |
| Second highest (6058–9685 people/km2) | 22.0 (20.8–23.1) | 28.4 (27.1–29.6) | 6.4 (5.6–7.3) | ||
| Second lowest (≤6057 people/km2) | 21.2 (20.1–22.2) | 27.0 (25.9–28.1) | 5.9 (5.1–6.6) | ||
| Lowest (non-DID) | 19.9 (18.9–20.9) | 26.7 (25.6–27.8) | 6.8 (6.1–7.6) | ||
| Prefectural COVID-19 outbreak situation | Highest (≥36.99 cases per 100,000 population) | 22.5 (21.0–24.0) | 29.2 (27.6–30.8) | 6.7 (5.5–7.8) | 0.912 |
| Second highest (20.33–36.98 cases per 100,000 population) | 21.5 (20.3–22.7) | 28.3 (27.0–29.7) | 6.8 (5.9–7.7) | ||
| Second lowest (8.84–20.32 cases per 100,000 population) | 19.9 (18.6–21.2) | 26.2 (24.8–27.7) | 6.3 (5.3–7.3) | ||
| Lowest (≤8.83 cases per 100,000 population) | 21.2 (20.5–21.8) | 27.8 (27.1–28.6) | 6.6 (6.1–7.2) | ||
CI: Confidence interval; COVID-19: Coronavirus disease 2019; DID: Densely inhabited district.