Table 1 Characteristics of the study participants in the CHARLS study according to age group

From: Determinants of COVID-19 vaccination status and hesitancy among older adults in China

Characteristic

Total sample n = 12,900

52–59 n = 3,536

60–69 n = 4,587

70–79 n = 3,578

≥80 n = 1,199

Sex

Female

6,858 (53.2%)

1,919 (54.3%)

2,429 (53.0%)

1,858 (51.9%)

652 (54.4%)

Male

6,042 (46.8%)

1,617 (45.7%)

2,158 (47.0%)

1,720 (48.1%)

547 (45.6%)

Marital status

Married

10,635 (82.6%)

3,290 (93.2%)

4,047 (88.4%)

2,701 (75.5%)

597 (49.9%)

Unmarried or widowed

2,245 (17.4%)

241 (6.8%)

529 (11.6%)

875 (24.5%)

600 (50.1%)

Vaccination status

Unvaccinated

791 (6.1%)

130 (3.7%)

199 (4.3%)

247 (6.9%)

215 (17.9%)

Only one dose

337 (2.6%)

43 (1.2%)

85 (1.9%)

115 (3.2%)

94 (7.8%)

Primary series completed

1,805 (14.0%)

379 (10.7%)

587 (12.8%)

560 (15.7%)

279 (23.3%)

Booster

9,967 (77.3%)

2,984 (84.4%)

3,716 (81.0%)

2,656 (74.2%)

611 (51.0%)

Ethnicity

Han

11,929 (93.0%)

3,231 (92.1%)

4,230 (93.0%)

3,342 (93.7%)

1,126 (94.1%)

Non-Han (minority)

892 (7.0%)

276 (7.9%)

320 (7.0%)

225 (6.3%)

71 (5.9%)

Education

Illiterate

3,716 (28.8%)

539 (15.2%)

1,310 (28.6%)

1,291 (36.1%)

576 (48.0%)

Primary (includes literate)

4,899 (38.0%)

1,392 (39.4%)

1,456 (31.7%)

1,621 (45.3%)

430 (35.9%)

Middle and high school or higher

4,281 (33.2%)

1,604 (45.4%)

1,820 (39.7%)

664 (18.6%)

193 (16.1%)

Residence (Hukou)

Rural residence

10,500 (81.4%)

2,963 (83.8%)

3,773 (82.3%)

2,841 (79.4%)

923 (77.0%)

Urban residence

2,398 (18.6%)

572 (16.2%)

814 (17.7%)

736 (20.6%)

276 (23.0%)

Region

East

4,448 (34.5%)

1,215 (34.4%)

1,705 (37.2%)

1,116 (31.2%)

412 (34.4%)

Central

3,836 (29.7%)

1,034 (29.2%)

1,301 (28.4%)

1,134 (31.7%)

367 (30.6%)

West

3,719 (28.8%)

1,050 (29.7%)

1,218 (26.6%)

1,096 (30.6%)

355 (29.6%)

Northeast

897 (7.0%)

237 (6.7%)

363 (7.9%)

232 (6.5%)

65 (5.4%)

Functional dependency

1,699 (13.2%)

226 (6.4%)

464 (10.2%)

601 (16.8%)

408 (34.2%)

Chronic conditions

Hypertension

5,773 (44.9%)

1,198 (34.0%)

2,013 (44.0%)

1,937 (54.2%)

625 (52.4%)

Heart disease

2,814 (21.9%)

522 (14.8%)

979 (21.4%)

999 (28.0%)

314 (26.3%)

Stroke

809 (6.3%)

122 (3.5%)

248 (5.4%)

329 (9.2%)

110 (9.2%)

Diabetes

1,980 (15.4%)

442 (12.5%)

757 (16.6%)

629 (17.6%)

152 (12.8%)

Lung disease

1,975 (15.4%)

381 (10.8%)

684 (15.0%)

671 (18.8%)

239 (20.1%)

Cancer

331 (2.6%)

78 (2.2%)

127 (2.8%)

105 (2.9%)

21 (1.8%)

Dyslipidemia

3,428 (26.7%)

865 (24.5%)

1,270 (27.8%)

1,051 (29.4%)

242 (20.3%)

Liver disease

862 (6.7%)

224 (6.4%)

319 (7.0%)

260 (7.3%)

59 (4.9%)

Kidney disease

1,128 (8.8%)

238 (6.8%)

409 (8.9%)

371 (10.4%)

110 (9.2%)

Asthma

789 (6.1%)

116 (3.3%)

276 (6.0%)

302 (8.5%)

95 (8.0%)

Arthritis/rheumatism

4,817 (37.5%)

1,126 (31.9%)

1,745 (38.2%)

1,499 (42.0%)

447 (37.5%)

Digestive disease

3,718 (28.9%)

1,038 (29.4%)

1,339 (29.3%)

1,042 (29.2%)

299 (25.1%)