Table 1.
Characteristics of the COVID-19 vaccine survey participants, Japan, 2021 (n = 10,192).
| Characteristics | Total N = 10,192 | Intend to get vaccinated N = 8,153 | Do not intend to get vaccinated N = 364 | Unsure N = 1,675 |
|---|---|---|---|---|
| Sociodemographic | ||||
| Age | ||||
| Mean (SD) | 54 (12) | 54.6 (12.4) | 48.6 (12.8) | 50.6 (11.4) |
| Age category | ||||
| 16–34 | 798 (7.8%) | 569 (7.0%) | 61 (16.8%) | 168 (10.0%) |
| 35–49 | 2694 (26.4%) | 2046 (25.1%) | 122 (33.5%) | 526 (31.4%) |
| 50–64 | 4562 (44.8%) | 3609 (44.3%) | 143 (39.3%) | 810 (48.4%) |
| ≥65 | 2138 (21.0%) | 1929 (23.7%) | 38 (10.4%) | 171 (10.2%) |
| Sex | ||||
| Male | 2556 (25.1%) | 2778 (27.9%) | 62 (17.0%) | 216 (12.9%) |
| Female | 7543 (74.0%) | 5816 (71.3%) | 292 (80.2%) | 1435 (85.7%) |
| Other | 17 (0.2%) | 14 (0.2%) | 1 (0.3%) | 2 (0.1%) |
| No answer | 76 (0.8%) | 45 (0.6%) | 9 (2.5%) | 22 (1.3%) |
| Region | ||||
| Hokkaido | 270 (2.7%) | 198 (2.4%) | 15 (4.1%) | 57 (3.4%) |
| Tohoku | 315 (3.1%) | 236 (2.9%) | 11 (3.0%) | 68 (4.1%) |
| Kanto | 3203 (31.4%) | 2606 (32.0%) | 118 (32.4%) | 479 (28.6%) |
| Chubu | 1091 (10.7%) | 868 (10.7%) | 38 (10.4%) | 185 (11.0%) |
| Kansai | 4325 (42.4%) | 3497 (42.9%) | 125 (34.3%) | 703 (42.0%) |
| Chugoku | 271 (2.7%) | 214 (2.6%) | 14 (3.9%) | 43 (2.6%) |
| Shikoku | 156 (1.5%%) | 109 (1.3%) | 9 (2.5%) | 38 (2.3%) |
| Kyusyu | 527 (5.2%) | 399 (4.9%) | 31 (8.5%) | 97 (5.8%) |
| Abroad | 34 (0.3%) | 26 (0.3%) | 3 (0.8%) | 5 (0.3%) |
| Educational attainment | ||||
| Elementary or junior high school | 208 (2.0%) | 151 (1.9%) | 10 (2.8%) | 47 (2.8%) |
| High school | 2688 (26.2%) | 2008 (24.6%) | 119 (32.7%) | 541 (32.3%) |
| College or professional school | 3365 (33.0%) | 2635 (32.3%) | 121 (33.2%) | 609 (36.4%) |
| Undergraduate school | 3502 (34.4%) | 2966 (36.4%) | 100 (27.5%) | 436 (26.0%) |
| Postgraduate school | 449 (4.4%) | 393 (4.8%) | 14 (3.9%) | 42 (2.5%) |
| Employment status | ||||
| Full-time | 3866 (37.9%) | 3142 (38.5%) | 142 (39.0%) | 582 (34.8%) |
| Part-time | 2728 (26.8%) | 2097 (25.7%) | 114 (31.3%) | 517 (30.9%) |
| Student | 100 (1.0%) | 73 (0.9%) | 3 (0.8%) | 24 (1.4%) |
| Retied | 740 (7.3%) | 681 (8.4%) | 9 (2.5%) | 50 (3.0%) |
| Homemaker | 1992 (19.5%) | 1555 (19.1%) | 69 (19.0%) | 368 (22.0%) |
| Unemployed due to COVID-19 | 128 (1.3%) | 91 (1.1%) | 6 (1.7%) | 31 (1.9%) |
| Unemployed irrelevant to COVID-19 | 638 (6.3%) | 514 (6.3%) | 21 (5.8%) | 103 (6.2%) |
| Healthcare worker | ||||
| Physician | 171 (1.7%) | 164 (2.0%) | 3 (0.8%) | 4 (0.2%) |
| Yes, other than physician | 1723 (16.9%) | 1400 (17.2%) | 75 (20.6%) | 248 (14.8%) |
| No | 8298 (81.4%) | 6589 (80.8%) | 286 (78.6%) | 1423 (85.0%) |
| Marriage status | ||||
| Married | 7412 (72.7%) | 6038 (74.1%) | 218 (59.9%) | 1156 (69.0%) |
| Never married | 1841 (18.1%) | 1409 (17.3%) | 94 (25.8%) | 338 (20.2%) |
| Divorced | 939 (9.2%) | 706 (8.7%) | 52 (14.3%) | 181 (10.8%) |
| Living with persons at age < 16 | 1958 (19.2%) | 1506 (18.5%) | 81 (22.3%) | 371 (22.2%) |
| Living with persons at age ≥ 65 | 3641 (35.7%) | 2994 (36.7%) | 112 (30.8%) | 535 (31.9%) |
| Household size | ||||
| 1 | 1499 (14.8%) | 1199 (14.8%) | 65 (18.2%) | 235 (14.2%) |
| 2 | 3685 (36.5%) | 3025 (37.4%) | 119 (33.3%) | 541 (32.6%) |
| 3 | 2577 (25.5%) | 2009 (24.8%) | 88 (24.7%) | 480 (29.0%) |
| 4 | 1576 (15.6%) | 1266 (15.7%) | 52 (14.6%) | 258 (15.6%) |
| 5 | 500 (5.0%) | 383 (4.7%) | 21 (5.9%) | 96 (5.8%) |
| ≥6 | 265 (2.6%) | 205 (2.5%) | 12 (3.4%) | 48 (2.9%) |
| Annual household income | ||||
| Less than JPY 2 million | 4592 (45.1%) | 3503 (43.0%) | 160 (44.0%) | 929 (55.5%) |
| JPY 200 million < JPY 400 million | 2823 (27.7%) | 2286 (28.0%) | 110 (30.2%) | 427 (25.5%) |
| JPY 400 million < JPY 600 million | 1449 (14.2%) | 1214 (14.9%) | 56 (15.4%) | 179 (10.7%) |
| JPY 600 million < JPY 800 million | 664 (6.5%) | 560 (6.9%) | 21 (5.8%) | 83 (5.0%) |
| JPY 800 million or higher | 664 (6.5%) | 590 (7.2%) | 17 (4.7%) | 57 (3.4%) |
| Health status | ||||
| Chronic respiratory disease | 795 (7.8%) | 588 (7.2%) | 41 (11.3%) | 166 (9.9%) |
| Chronic heart disease | 1419 (13.9%) | 1190 (14.6%) | 31 (8.5%) | 198 (11.8%) |
| Chronic kidney disease | 152 (1.5%) | 130 (1.6%) | 6 (1.7%) | 16 (1.0%) |
| Chronic liver disease | 84 (0.8%) | 70 (0.9%) | 2 (0.6%) | 12 (0.7%) |
| Diabetes mellitus | 529 (5.2%) | 439 (5.4%) | 15 (4.1%) | 75 (4.5%) |
| Blood disease except for anaemia | 154 (1.5%) | 119 (1.5%) | 9 (2.5%) | 26 (1.6%) |
| Malignancy | 216 (2.1%) | 149 (1.8%) | 17 (4.7%) | 50 (3.0%) |
| Receiving immunosuppressant | 309 (3.0%) | 224 (2.8%) | 14 (3.9%) | 71 (4.2%) |
| Neurological or neuromuscular disease due to immune deficiency | 60 (0.6%) | 36 (0.4%) | 5 (1.4%) | 19 (1.1%) |
| Physical decline associated with a neurological disease or a neuromuscular disease | 34 (0.3%) | 23 (0.3%) | 1 (0.3%) | 10 (0.6%) |
| Chromosomal abnormality | 14 (0.1%) | 11 (0.1%) | 1 (0.3%) | 2 (0.1%) |
| Severe psychosomatic disorder | 7 (0.07%) | 3 (0.04%) | 2 (0.6%) | 2 (0.1%) |
| Sleep apnoea | 271 (2.7%) | 224 (2.8%) | 11 (3.0%) | 36 (2.2%) |
| Obesity | 936 (9.2%) | 704 (8.6%) | 24 (6.6%) | 208 (12.4%) |
| No underlying health condition | 5862 (57.5%) | 4767 (58.5%) | 219 (60.2%) | 876 (52.3%) |
| Smoking status | ||||
| Active smoker | 922 (9.1%) | 690 (8.5%) | 47 (12.9%) | 185 (11.0%) |
| Former smoker | 2435 (23.9%) | 1987 (24.4%) | 83 (22.8%) | 365 (21.8%) |
| Only electronic cigarettes | 278 (2.7%) | 237 (2.9%) | 8 (2.2%) | 33 (2.0%) |
| Never smoker | 6557 (64.3%) | 5239 (64.3%) | 226 (62.1%) | 1092 (65.2%) |
| Have you had a flu shot within the past year? | 7037 (69.0%) | 5998 (73.6%) | 131 (36.0%) | 908 (54.2%) |
| Self-reported history of COVID-19 | ||||
| Yes (I tested positive) | 58 (0.6%) | 48 (0.6%) | 3 (0.8%) | 7 (0.4%) |
| Yes (I had the symptoms but did not receive a positive test) | 83 (0.8%) | 60 (0.7%) | 5 (1.4%) | 18 (1.1%) |
| No | 10,051 (98.6%) | 8045 (98.7%) | 356 (97.8%) | 1650 (98.5%) |
| Have you had any vaccine side-effects? | ||||
| Yes | 975 (9.6%) | 644 (7.9%) | 85 (23.4%) | 246 (14.7%) |
| No | 8475 (83.2%) | 7051 (86.5%) | 238 (65.4%) | 1186 (70.8%) |
| Unsure | 742 (7.3%) | 458 (5.6%) | 41 (11.3%) | 243 (14.5%) |
| Self-reported overall health | ||||
| 1–3 | 116 (1.1%) | 76 (0.9%) | 11 (3.0%) | 29 (1.7%) |
| 4–6 | 5430 (53.3%) | 4144 (50.8%) | 222 (61.0%) | 1064 (63.5%) |
| 7–9 | 4646 (45.6%) | 3933 (48.2%) | 131 (36.0%) | 582 (34.8%) |
| Pregnancy status | ||||
| Pregnant | 67 (0.7%) | 36 (0.4%) | 5 (1.4%) | 26 (1.6%) |
| Not pregnant | 5159 (50.6%) | 4087 (50.1%) | 176 (48.4%) | 896 (53.5%) |
| Desire to be pregnant | 228 (2.2%) | 144 (1.8%) | 26 (7.1%) | 58 (3.5%) |
| Not applicable | 4738 (46.5%) | 3886 (47.7%) | 157 (43.1%) | 695 (41.5%) |