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Table 1 Demographic Characteristics

From: Effects of the 2018 Japan Floods on long-term care insurance costs in Japan: retrospective cohort study

  Victims of the disaster Non-victims of the disaster p value
n = 3024 1.1% n = 276,554 98.9%
Age, no. (%)
 under 65 59 2.0 5696 2.1 0.02*
 65–74 314 10.4 26,908 9.7
 75–84 1012 33.5 86,869 31.4
 over 85 1639 54.2 157,081 56.8
Gender, no. (%)
 Male 897 29.7 77,738 28.1 0.075*
 Female 2073 68.6 192,987 69.8
 Missing+ 54 1.8 5829 2.1  
Level of long-term care need, no. (%)
 Support need level 1‡ 299 9.9 21,555 7.8 < 0.001†
 Support need level 2 398 13.2 28,387 10.3
 Care need level 1 727 24.0 61,979 22.4
 Care need level 2 584 19.3 54,551 19.7
 Care need level 3 398 13.2 42,414 15.3
 Care need level 4 342 11.3 37,282 13.5
 Care need level 5 276 9.1 30,285 11.0
Change in the level of long-term care need at December, no. (%)
 Increased 376 12.4 29,074 10.5 < 0.001*
 Unchanged (without re-certification) 2047 (1881) 67.7 (62.2) 202,166 (155,845) 73.1 (56.4)
 Decreased 174 5.8 12,647 4.6
 Missing§ 427 14.1 32,667 11.8  
Facility residents, no (%) 672 22.2 83,795 30.3 < 0.001*
Facility transfer, no (%) 247 36.7 3028 3.6 < 0.001*
Existence of a total disused month of LTCI service, no (%)
 All period 808 26.7 44,181 16.0 < 0.001*
 Month      
  1–3 502 16.6 24,940 9.0 < 0.001*
  4–6 564 18.7 37,217 13.5 < 0.001*
Cost of per month, mean (SD)
 Home residents 1029 1029 1002 832 < 0.001†
 Facility residents 2404 1219 2115 850 < 0.001†
Mean of LTCI service utilizations among home residents per month, no (%)
 Home-based service 1399 59.5 137,956 71.6 < 0.001*
 Short-stay service 288 12.3 21,906 11.4 < 0.001*
 Facility service 165 7.0 4513 2.3 < 0.001*
  1. Footnote
  2. LTCI long term care insurance, SD standard deviation
  3. *chi-squared test
  4. Wilcoxon rank-sum test
  5. Include project eligible persons, exclude them from the chi-squared test
  6. §exclude them from the chi-squared test