Table 1:

Demographic, prior lifetime history of mental disorders, earthquake-related variables and triallelic and biallelic genotypes frequencies of Study participants by 12-month Post-traumatic Stress Disorder (PTSD) status.

Variables	No 12 PTSD	12m PTSD	p-value #
	N (%)	N (%)
Sex
Male	154 (47.5)	4 (23.5)
Female	170 (52.5)	13 (76.5)	0.053
Age (Mean, SD)	47.22 (16.332)	48.00 (14.794)	0.85
Ethnicity
White/Caucasic	293 (90.4)	12 (70.6)
Not white/caucasic	31 (9.6)	5 (29.4)	0.02&
Marital status
Living with a partner	244 (75.3)	12 (70.6)
Not living with a partner	80 (24.7)	5 (29.4)	0.66
Education
Secondary or higher	123 (38.0)	3 (17.6)
Primary or lower	201 (62.0)	14 (82.4)	0.09
Employment
Working	172 (53.1)	4 (23.5)
Not working	152 (46.9)	13 (76.54)	0.02
Any prior lifetime PTSD	4 (1.2)	8 (47.1)	< 0.005
Number of any prior lifetime other anxiety disorders (Mean, SD)	0.10 (0.350)	0.53 (0.800)	0.04
Number of Any prior lifetime mood disorder (Mean, SD)	0.12 (0.341)	0.47 (0.514)	0.01
Number of any prior substance disorder (Mean, SD)	0.05 (0.274)	0.18 (0.529)	0.33
Number of any prior lifetime mental disorders (Mean, SD)	0.27 (0.677)	1.18 (1.334)	0.01
High Earthquake Exposure (HEE) †	154 (59.5)	13 (81.2)	0.01
High Emotional Impact (HEI) ‡	189 (57.1)	14 (87.5)	0.02
Triallelic classification
S’S’	108 (33.3)	5 (29.4)
S’L’	154 (47.5)	7 (41.2)
L’L’	62 (19.1)	5 (29.4)	0.58
Biallelic classification
SS	96 (29.6)	5 (29.4)
SL	160 (49.4)	7 (41.2)
LL	68 (21.0)	5 (29.4)	0.68

^#Chi-squared or Student-T test for categoric or continuous mesures respectivelly.

^±Include: student, homemaker, retired/disabled, unemployed and others diferent from working.

^†High Earthquake Exposure (HEE): defined as those with an exposure score above the mean rate of the total sample;

^‡High Emòtional Impact (HEI): defined as those with an Emotional impact above the mean rate of the total sample;

^&Fisher’s exact test