Table 3.

Independent prognosis factors for current PTSD, expressed in OR and adjusted ORs of 5 models

Individual characteristics	Univariate analysis			2000 model	Around 2006 model	Around 2013 model	Fluctuation model	All FGCA model
	Number	Prevalence	OR	Adjusted OR	Adjusted OR	Adjusted OR	Adjusted OR	Adjusted OR
Counties
Huarong	144	14.6	Reference
Ziyang	46	30.4	2.562*	1.779	1.443	1.704	3.138*	1.069
Anxiang	77	7.8	0.495	0.504	0.437	0.597	0.538	0.324
Gender
Male	141	13.5	Reference
Female	126	17.5	1.358	1.085	1.108	1.132	1.387	1.698
Age
29-57	159	18.9	Reference
58-81	108	10.2	0.488	0.375*	0.284*	0.366*	0.499	0.323*
Education Level
Elementary school or below	123	13.8	Reference
Middle school or above	144	16.7	1.247	0.808	0.831	0.747	0.749	1.122
Flood-related stressors
0	105	3.8	Reference
1	66	19.7	6.196**	7.235**	8.876**	6.785**	5.917**	11.733**
≥2	96	25.0	8.417***	9.645***	12.341***	9.634**	9.036***	17.512***
FGCA in 2000
Never	61	32.8	Reference
Occasionally	113	13.3	0.314**	0.268**				1.255
Actively	93	6.5	0.141***	0.133***				0.218
FGCA around 2006
Never	54	50.0	Reference
Occasionally	116	8.6	0.094***		0.065***			0.021***
Actively	97	4.1	0.043***		0.031***			0.076*
FGCA around 2013
Never	55	45.5	Reference
Occasionally	103	11.7	0.158**			0.182***		3.629
Actively	109	3.7	0.046***			0.045***		0.906
Fluctuation of FGCA
No change	152	15.8	Reference
Getting frequent	61	6.6	0.374				0.320	0.677
Getting less frequent	38	28.9	2.173				2.003	6.893
Fluctuation	16	12.5	0.762				0.846	0.345

FGCA Frequency of General Collective Action; *p < .05; **p < .01; ***p < .001