Table 1.
Baseline characteristics of participants in the first survey (n = 8273).
| The fourth survey |
||||
|---|---|---|---|---|
| Low-risk (n = 7,471) |
High-risk (n = 802) |
|||
| n (%) | n (%) | P value | ||
| Age groups | Young | 1570 (21.0) | 154 (19.2) | 0.467 |
| Middle age | 4555 (61.0) | 497 (62.0) | ||
| Elderly | 1346 (18.0) | 151 (18.8) | ||
| Sex | Women | 5184 (69.4) | 565 (70.4) | 0.535 |
| Area | Inland areas | 6080 (81.4) | 664 (82.8) | 0.328 |
| Occupation | Health care workers | 1343 (18.0) | 140 (17.5) | 0.821 |
| Service | 2191 (29.3) | 251 (31.3) | ||
| Schools | 519 (6.9) | 52 (6.5) | ||
| Others | 2651 (35.5) | 281 (35.0) | ||
| Government workers | 767 (10.3) | 78 (9.7) | ||
| Household members | Living alone | 883 (11.8) | 107 (13.3) | 0.209 |
| Living with 2–4 persons | 5397 (72.2) | 556 (69.3) | ||
| Living with 5 persons or more | 1191 (15.9) | 139 (17.3) | ||
| Levels of engagement of preventive measures | Poor | 217 (2.9) | 20 (2.5) | 0.063 |
| Low | 1583 (21.2) | 147 (18.3) | ||
| Middle | 3121 (41.8) | 372 (46.4) | ||
| High | 2550 (34.1) | 263 (32.8) | ||
| Levels of knowledge of vaccines | Very low | 983 (13.2) | 85 (10.6) | <0.001 |
| Low | 1115 (14.9) | 90 (11.2) | ||
| Moderate | 2701 (36.2) | 282 (35.2) | ||
| High | 2672 (35.8) | 345 (43.0) | ||
Categorical variables are presented as number of cases (%).
P values were calculated using the chi-squared test.