Prevalence and risk factors of post-traumatic stress disorder among elderly survivors six months after the 2008 Wenchuan earthquake in China

Table 4 Multivariable analysis of potential risk factors for probable PTSD for different IES-R cut off scores among elderly survivors six months after the Wenchuan earthquake(n = 427)

Variables	Cut off score of 2 points on average				Cut off score of 33 total score				Cut off score of 35 total score
	OR	P	95% CI for OR		OR	P	95% CI for OR		OR	P	95% CI for OR
	OR	P	Lower	Upper	OR	P	Lower	Upper	OR	P	Lower	Upper
Age	1.5	0.271	0.7	3.2	1.5	0.245	0.8	2.9	1.2	0.678	0.6	2.3
Gender	1.1	0.809	0.6	1.8	1.1	0.598	0.7	1.8	0.9	0.816	0.6	1.5
Marital status	1.2	0.612	0.6	2.3	1.4	0.191	0.8	2.5	1.4	0.219	0.8	2.5
Education level (reference: elementary school or lower)
Middle school	0.6	0.073	0.3	1.1	0.7	0.095	0.4	1.1	0.5	0.012	0.3	0.9
Senior high school or higher	0.3	0.324	0.04	2.9	0.5	0.314	0.1	2.0	0.5	0.361	0.1	2.1
Change in economic status (reference: improved)
No change	0.2	0.022	0.1	0.8	0.3	0.082	0.1	1.2	0.3	0.074	0.1	1.1
Declined	0.2	0.029	0.1	0.9	0.5	0.261	0.1	1.8	0.4	0.198	0.1	1.6
House damage	1.2	0.572	0.6	2.3	1.5	0.134	0.9	2.6	1.2	0.523	0.7	2.1
Suffered own injury	0.9	0.848	0.4	2	1.3	0.460	0.7	2.4	1.2	0.551	0.6	2.3
Family members injured (reference: no injury)
Injury	0.8	0.657	0.3	2	0.9	0.730	0.4	1.9	0.7	0.352	0.3	1.5
Death	0.4	0.116	0.1	1.2	0.9	0.741	0.4	1.8	0.7	0.383	0.3	1.5
Number of family members living in the same home	0.6	0.005	0.5	0.9	0.7	0.019	0.6	1.0	0.8	0.032	0.6	1.0
Chronic illnesses diagnosed	1.8	0.001	1.3	2.5	1.9	< 0.001	1.4	2.5	1.8	< 0.001	1.3	2.4
Available measures to assess own health	1.4	0.096	0.9	2.2	1.4	0.077	1	2	1.4	0.055	1.0	2.1
Constant	0.3	0.269	< 0.01	2.5	0.2	0.15	< 0.001	1.7	0.4	0.30	0.1	2.7

ISSN: 1471-244X