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Table 5 Multinomial logistic regression of OHRQoL

From: Oral health-related quality of life and related factors among residents in a disaster area of the Great East Japan Earthquake and giant tsunami

  OHRQoL  
  Very poor (GOHAI ≤ 48) Poor (49 ≤ GOHAI < 55) Reference No. (GOHAI ≥ 55)
  n COR (95 % CI) AOR (95 % CI) n COR (95 % CI) AOR (95 % CI)  
   p-value p-value   p-value p-value  
Sex        
 Women 377 1.08 (0.99–1.49) 1.11 (0.40–1.40) 262 1.08 (0.99–1.18) 1.21 (0.94–1.56) 392
0.09 0.40 0.12 0.13
 Mena 215    148    570
Age (in years)        
  ≥ 70 174 1.06 (0.95–1.19) 1.27 (0.86–1.87) 129 0.99 (0.88–1.13) 1.27 (0.68–1.50) 334
0.32 0.23 0.94 0.31
 50–69 322 1.18 (1.09–1.27) 1.68 (1.28–2.20) 196 1.07 (0.97–1.17) 1.24 (0.93–1.66) 411
< 0.01 < 0.01 0.22 0.06
  < 50 96    85    217
Evacuation from home        
 Yes 200 1.05 (0.97–1.13) 1.02 (0.81–1.30) 128 0.85 (0.72–1.00) 0.83 (0.64–1.08) 353
0.25 0.86 0.06 0.16
 No 392    282    609
Receiving dental treatments before disaster        
 Yes 442 1.98 (1.60–2.46) 2.13 (1.59–2.85) 322 1.49 (1.15–1.93) 1.44 (1.04–1.99) 839
< 0.01 < 0.01 < 0.01 0.03
 No 150    78    123
Lost or fractured dentures        
 Yes 79 2.57 (1.83–3.60) 2.32 (1.54–3.50) 41 1.92 (1.29–2.86) 1.99 (1.27–3.14) 50
< 0.01 < 0.01 < 0.01 < 0.01
 No 513    369    912
Self-rated systemic health        
Poor/very poor 152 2.05 (1.75–2.39) 6.15 (3.58–10.6) 62 1.59 (1.30–1.95) 2.46 (1.45–4.17) 104
< 0.01 < 0.01 < 0.01 < 0.01
 Fair 415 1.13 (1.09–1.18) 3.03 (1.88–4.87) 318 1.09 (1.05–3.00) 1.97 (1.29–3.00) 715
< 0.01 < 0.01 < 0.01 < 0.01
 Good 23    30    141
SPD (K6 ≥ 13)        
 Yes 274 1.97 (1.71–2.27) 2.32 (1.82–2.95) 126 1.30 (1.09–1.57) 1.28 (0.97–1.68) 228
< 0.01 < 0.01 < 0.01 0.08
 No 304    276    720
Economic status        
 Severe 325 1.13 (1.03–1.25) 1.17 (0.93–1.46) 198 1.07 (0.95–1.20) 0.90 (0.88–1.42) 496
   0.01 0.19 0.27 0.37
 Normal 267    212    466
Number of present teeth        
 Edentulous 94 1.04 (0.84–1.28) 1.75 (1.19–2.55) 66 0.88 (0.69–1.12) 1.03 (0.69–1.54) 188
0.74 < 0.01 0.28 0.88
 119 255 1.51 (1.32–1.71) 1.91 (1.44–2.53) 130 1.11 (0.94–1.32) 1.08 (0.80–1.46) 263
< 0.01 < 0.01 0.22 0.62
 20 or more 243    214    511
Having one or more decayed teeth        
 Yes 343 1.30 (1.14–1.80) 1.54 (1.20–1.97) 251 1.20 (1.03–1.39) 1.36 (1.04–1.77) 650
< 0.01 < 0.01 0.03 0.02
 No 249    159    312
CPI code 4        
 Yes 78 1.58 (1.18–2.13) 1.43 (0.97–2.11) 44 1.29 (0.91–1.83) 1.35 (0.89–2.07) 80
< 0.01 0.08 0.18 0.16
 No 514    366    882
Having one or more moving teeth at grade 2 or 3        
 Yes 79 2.21 (1.60–3.06) 1.73 (1.14–2.64) 27 1.09 (0.70–1.70) 0.89 (0.53–1.49) 58
< 0.01 0.01 0.71 0.66
 No 513    383    904
  1. Note. COR crude odds ratio, AOR adjusted odds ratio, CI confidence interval
  2. aThe last row shows the reference category for each explanatory variable