Table 1. Demographic characteristics of the target population
| Total (n=100,031) | Reference (n=39,938) | Pre-lockdown (n=40,336) | Lockdown (n=19,757) |
| Gender |
| Male | 40,689 (40.7) | 15,390 (38.5) | 16,178 (40.1) | 9,121 (46.2) |
| Female | 59,342 (59.3) | 24,548 (61.5) | 24,158 (59.9) | 10,636 (53.8) |
| Age (years) | 62.8 ± 12.3 | 62.5 ± 12.4 | 63.0 ± 12.2 | 63.2 ± 12.4 |
| Health insurance | 91,921 (91.9) | 36,530 (91.5) | 36,923 (91.5) | 18,468 (93.5) |
| Location |
| Binh Thanh | 34,073 (34.4) | 12,989 (32.9) | 13,338 (33.5) | 7,746 (39.3) |
| Other districts | 13,736 (13.9) | 5,499 (13.9) | 5,687 (14.3) | 2,550 (12.9) |
| Other provinces | 9,036 (9.1) | 4,455 (11.3) | 3,667 (9.2) | 914 (4.6) |