Table 4.
Baseline Sociodemographic Characteristics of the Analytical Sample and Depression Outcomes by Censoring Status in 2013 and 2016, Iwanuma, Japan, 2010–2016
| 2013 | 2016 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Censored | Censored | |||||||||||||
| Characteristic | All Disaster Survivors | Not Censored | Died | Withdrew | Not Censored | Died | Withdrew | |||||||
| No. | % | No. | % | No. | % | No. | % | No. | % | No. | % | No. | % | |
| Total | 4,857 | 100.0 | 3,567 | 100.0 | 342 | 100.0 | 948 | 100.0 | 2,781 | 100.0 | 740 | 100.0 | 1,336 | 100.0 |
| Depression status in follow-up wavesa,b | ||||||||||||||
| Mild or severe depression | N/A | 1,027 | 28.8 | N/A | N/A | 630 | 22.7 | N/A | N/A | |||||
| No depression | N/A | 2,072 | 58.1 | N/A | N/A | 1,430 | 51.4 | N/A | N/A | |||||
| Missing data | N/A | 468 | 13.1 | N/A | N/A | 721 | 25.9 | N/A | N/A | |||||
| Distance from home address to the coast in 2010, m | ||||||||||||||
| ≥1,000 | 3,424 | 96.0 | 305 | 89.2 | 867 | 91.5 | 2,685 | 96.5 | 682 | 92.2 | 1,229 | 92.0 | ||
| <1,000 | 143 | 4.0 | 37 | 10.8 | 81 | 8.5 | 96 | 3.5 | 58 | 7.8 | 107 | 8.0 | ||
| Sex | ||||||||||||||
| Male | 2,105 | 43.3 | 1,552 | 43.5 | 173 | 50.6 | 380 | 40.1 | 1,208 | 43.4 | 367 | 49.6 | 530 | 39.7 |
| Female | 2,752 | 56.7 | 2,015 | 56.5 | 169 | 49.4 | 567 | 59.9 | 1,573 | 56.6 | 373 | 50.4 | 806 | 60.3 |
| Depression in 2010a | ||||||||||||||
| Mild or severe depression | 1,444 | 29.7 | 984 | 27.6 | 140 | 40.9 | 320 | 33.8 | 730 | 26.2 | 300 | 40.5 | 414 | 31.0 |
| No depression | 2,682 | 55.2 | 2,090 | 58.6 | 136 | 39.8 | 456 | 48.1 | 1,703 | 61.2 | 298 | 40.3 | 681 | 51.0 |
| Missing data | 731 | 15.1 | 493 | 13.8 | 66 | 19.3 | 172 | 18.1 | 348 | 12.5 | 142 | 19.2 | 241 | 18.0 |
| Self-rated health in 2010 | ||||||||||||||
| Very good | 538 | 11.1 | 423 | 11.9 | 23 | 6.7 | 92 | 9.7 | 347 | 12.5 | 50 | 6.8 | 141 | 10.6 |
| Good | 3,140 | 64.6 | 2,420 | 67.8 | 157 | 45.9 | 563 | 59.4 | 1,940 | 69.8 | 380 | 51.4 | 820 | 61.4 |
| Bad | 862 | 17.7 | 537 | 15.1 | 107 | 31.3 | 218 | 23.0 | 374 | 13.4 | 207 | 28.0 | 281 | 21.0 |
| Very bad | 27 | 4.7 | 121 | 3.4 | 51 | 14.9 | 55 | 5.8 | 71 | 2.6 | 89 | 12.0 | 67 | 5.0 |
| Missing data | 90 | 1.9 | 66 | 1.9 | 4 | 1.2 | 20 | 2.1 | 49 | 1.8 | 14 | 1.9 | 27 | 2.0 |
| Duration of education in 2010, years | ||||||||||||||
| <6 | 123 | 2.5 | 47 | 1.3 | 26 | 7.6 | 50 | 5.3 | 25 | 0.9 | 55 | 7.4 | 43 | 3.2 |
| 6–9 | 1,634 | 33.6 | 1,183 | 33.2 | 121 | 35.4 | 330 | 34.8 | 866 | 31.1 | 269 | 36.4 | 499 | 37.4 |
| 10–12 | 1,938 | 39.9 | 1,486 | 41.7 | 114 | 33.3 | 338 | 35.7 | 1,214 | 43.7 | 244 | 33.0 | 480 | 35.9 |
| ≥13 | 916 | 18.9 | 713 | 20.0 | 43 | 12.6 | 160 | 16.9 | 596 | 21.4 | 102 | 13.8 | 218 | 16.3 |
| Other | 52 | 1.1 | 31 | 0.9 | 12 | 3.5 | 9 | 0.9 | 17 | 0.6 | 19 | 2.6 | 16 | 1.2 |
| Missing data | 194 | 4.0 | 107 | 3.0 | 26 | 7.6 | 61 | 6.4 | 63 | 2.3 | 51 | 6.9 | 80 | 6.0 |
| Marital status in 2010 | ||||||||||||||
| Not married | 1,483 | 30.5 | 984 | 27.6 | 149 | 43.6 | 350 | 36.9 | 700 | 25.2 | 306 | 41.4 | 477 | 35.7 |
| Married | 3,173 | 65.3 | 2,460 | 69.0 | 170 | 49.7 | 543 | 57.3 | 1,999 | 71.9 | 391 | 52.8 | 783 | 58.6 |
| Missing data | 201 | 4.1 | 123 | 3.4 | 23 | 6.7 | 55 | 5.8 | 82 | 2.9 | 43 | 5.8 | 76 | 5.7 |
| Age in 2010, yearsc | 74.7 (6.97) | 73.6 (6.29) | 81.7 (7.95) | 76.1 (7.32) | 72.8 (5.73) | 80.6 (7.60) | 75.4 (6.99) | |||||||
| Equivalized household income in 2010 (10,000 yen)c,d | 228 (147) | 230 (142) | 230 (171) | 220 (157) | 232 (138) | 223 (154) | 223 (161) | |||||||
| Missing data | 977 | 20.1 | 656 | 18.4 | 79 | 23.1 | 242 | 25.5 | 458 | 16.5 | 182 | 24.6 | 337 | 25.2 |
Abbreviation: N/A, not applicable.
a Depression was defined as scoring 5 or more points on the Geriatric Depression Scale.
b Information on the prevalence of depression in 2013 and 2016 was available only for persons who were not censored in each wave.
c Values are expressed as mean (standard deviation).
d Household income was divided by the square root of household size.