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Table 2 The prevalence and odds ratios for psychological distress (K6 score > =5)

From: The psychological impact of a dual-disaster caused by earthquakes and radioactive contamination in Ichinoseki after the Great East Japan Earthquake

  n Crude Adjusted
  Distressed/all (%) OR (95% CI) OR (95% CI)
Gender      
  Male 167/402 (41.5) 1.00   1.00  
  Female 265/498 (53.2) 1.61 (1.21-2.14)** 1.43 (1.04-1.97)*
Age, year      
  Young: 20-39 41/115 (35.7) 1.00   1.00  
  Middle-aged: 40-59 129/269 (48.0) 1.66 (1.04-2.64)* 1.54 (0.94-2.54)
  Elderly: 60+ 262/516 (50.8) 1.87 (1.19-2.93)** 1.21 (0.72-2.03)
Education      
  University graduates or higher 29/100 (29.0) 1.00   1.00  
  High school/Technical or Two-year college 286/594 (48.1) 2.26 (1.40-3.65)*** 2.16 (1.31-3.53)**
  Junior high school or less 117/206 (56.8) 3.20 (1.84-5.56)*** 2.80 (1.58-4.97)***
Employment status      
  Permanent employee 186/451 (41.2) 1.00   1.00  
  Non-permanent employee/House keeper/Student 108/206 (52.4) 1.55 (1.08-2.21)* 1.28 (0.86-1.90)
  Unemployed/Retired 138/243 (56.8) 1.87 (1.32-2.64)*** 1.84 (1.22-2.76)**
Number of house occupants (people including the respondent)      
  5+ 90/191 (47.1) 1.00   1.00  
  3-4 151/332 (45.5) 0.94 (0.62-1.42) 0.86 (0.56-1.33)
  1-2 191/377 (50.7) 1.17 (0.79-1.72) 0.98 (0.63-1.52)
House damage due to earthquakes      
  Nothing 163/383 (42.6) 1.00   1.00  
  Damaged (partially/half-collapsed/fully-collapsed) 269/517 (52.0) 1.47 (1.12-1.93)** 1.42 (1.06-1.88)*
Anxiety about radioactive contamination      
  Low anxiety (0 nothing/1 slightly) 157/406 (38.7) 1.00   1.00  
  High anxiety (2 moderately/3 strongly) 274/494 (55.5) 1.97 (1.49-2.61)*** 1.92 (1.43-2.59)***
Interaction between house damage and anxiety about radioactive contamination      
  Any other 255/603 (42.3) - - 1.00  
  Dual-disaster damage (Damaged and high anxiety) 177/297 (59.6) - - 1.11 (0.63-1.95)
  1. *p < .05, **p < .01, ***p < .001. Abbreviation: OR Odds ratio. Adjusted OR: Odds ratios adjusted for all variables.