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Table 2 Bivariate and multivariate analysis of PTSD symptoms among the adult survivors

From: Are the elderly more vulnerable to psychological impact of natural disaster? A population-based survey of adult survivors of the 2008 Sichuan earthquake

  PTSD,
No. (%)
Bivariate OR
(95% CI)
PValue Multivariate OR
(95% CI)
PValue
Overall 42 (15.2)     
Demographics      
   Age group      
Younger adults (< 60 y)
Elders (≥ 60 y)
11 (8.0)
31 (22.5)
1.00
3.35 (1.61-6.97)
0.001 1.00
3.56 (1.57-8.06)
0.002
   Sex      
Male
Female
17 (11.5)
25 (19.5)
1.00
1.87 (0.96-3.65)
0.07   
   Ethnicity      
Han 17 (15.5) 1.03 (0.53-2.01)    
Ethnic minorities 25 (15.1) 1.00 0.93   
   Marital status      
Married or living together
Others (unmarried, divorced, etc.)
32 (16.0)
10 (13.2)
1.26 (0.59-2.70)
1.00
0.56   
   Education level      
Primary school or lower
Higher than primary school
26 (18.7)
16 (11.7)
1.74 (0.89-3.41)
1.00
0.11   
Earthquake-related experiences      
   Having been in serious danger      
Yes
No
33 (19.8)
9 (8.3)
2.74 (1.25-5.98)
1.00
0.01 3.12 (1.32-7.37)
1.00
0.009
   Having been seriously injured      
Yes
No
10 (30.3)
32 (13.2)
2.87 (1.25-6.58)
1.00
0.01 NA  
   Having family members or friends seriously injured      
Yes
No
11 (22.4)
31 (13.7)
1.83 (0.85-3.96)
1.00
0.12   
   Having witnessed someone being killed or seriously injured      
Yes 27 (19.3) 1.93 (0.98-3.81)    
Yes
No
27 (19.3)
15 (11.0)
1.93 (0.98-3.81)
1.00
0.06   
   Having Lost family members      
Yes
No
15 (39.5)
27 (11.3)
5.10 (2.37-10.94)
1.00
<0.001 3.43 (1.46-8.02)
1.00
0.005
   Having Lost significant others      
Yes
No
23 (23.0)
19 (10.8)
2.47 (1.27-4.80)
1.00
0.008 NA  
   Having one's house seriously damaged      
Yes
1.00
36 (15.9)
6 (12.2)
1.35 (0.54-3.41)
1.00
0.52   
   Having Lost important belongings      
Yes
No
21 (18.6)
21 (12.9)
1.54 (0.80-2.98)
1.00
0.20   
   Having felt extremely anxious about one's own life      
Yes
No
34 (15.0)
8 (16.0)
1.00
1.08 (0.47-2.49)
0.87   
Having felt scared that family members or significant
others would die or be seriously injured
     
Yes
No
40 (15.8)
2 (8.7)
1.97 (0.45-8.74)
1.00
0.37   
   Having felt guilt concerning someone's death or injury      
Yes
No
31 (25.6)
11 (7.1)
4.51 (2.16-9.42)
1.00
<0.001 5.22 (2.32-11.75)
1.00
<0.001
   Utilization of mental health services      
Yes
No
1 (2.3)
41 (17.7)
1.00
9.23 (1.24-68.97)
0.03 1.00
7.31 (0.93-57.23)
0.06
  1. Notes: NA (not available), is a marker for variables dropped out of the multivariate model.