Table 2 The moderation effect of the rs6265 polymorphism on the relationship between the childhood trauma questionnaire (CTQ) and the posttraumatic stress disorder checklist (PCL) score while controlling for gender, age, years of education, lifetime events checklist (LEC), hospital anxiety and depression scale (HADS), insomnia severity index (ISI), and alcohol use disorders identification test (AUDIT).

Variables	B	S.E.	t	R ²
Model 1
(Constant)	−30.525	10.331	−2.955**	0.355***
gender	−4.329	2.336	−1.854
age	−0.203	0.085	−2.408*
years of education	−1.212	0.359	−3.376**
LEC	2.353	0.512	−3.376***
rs6265	12.375	6.553	1.888
CTQ	0.480	0.109	4.384***
rs6265 × CTQ	−0.326	0.128	−2.548*
rs6265	Effect	Boot *S.E* .	Boot Confidence Interval
CC (Val/Val)	0.480***	0.109	[0.264, 0.695]
CT & TT (Met allele)	0.154	0.085	[−0.013, 0.321]
Model 2
(Constant)	−8.607	7.073	−1.217	0.757***
gender	0.949	1.659	0.572
age	−0.098	0.055	−1.781
years of education	−0.220	0.231	−0.952
LEC	0.882	0.331	2.662**
HADS - anxiety	1.487	0.234	6.361***
HADS - depression	1.030	0.242	4.257***
ISI	0.612	0.122	5.028***
AUDIT	−0.284	0.218	−1.304
rs6265	7.690	4.107	1.872
CTQ	0.236	0.070	3.375**
rs6265 × CTQ	−0.161	0.081	−1.988*
rs6265	Effect	Boot *S.E* .	Boot Confidence Interval
CC (Val/Val)	0.236***	0.700	[0.098, 0.374]
CT & TT (Met allele)	0.076	0.053	[−0.029, 0.180]

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