Table 4 Moderation analysis of childhood trauma on the relationship between PTSD symptoms and pre-MVC HCC.

From: The relationship between hair cortisol and trauma sequelae in motor vehicle crash survivors: the role of childhood trauma experiences

Outcome t2

Predictor

F

β

p

R² adj.

F

β

p

R² adj.

 

Moderation modela

Modelb

PDS

 

6.78

 

<0.001

0.08

6.45

 

<0.001

0.15

 

CTQ

 

0.29

<0.001

  

0.36

<0.001

 
 

HCCt1

 

0.07

0.902

  

0.35

0.526

 
 

HCCt1*CTQ

 

0.05

0.332

  

0.05

0.784

 
      

age

−0.05

0.745

 

IES-R total

  

2.89

 

<0.001

0.08

2.44

 

0.072

0.05

 

CTQ

 

0.12

0.095

  

0.11

0.122

 
 

HCCt1

 

0.28

0.002

  

0.30

0.015

 
 

HCCt1*CTQ

 

−0.02

0.921

  

−0.02

0.803

 
      

age

−0.07

0.426

 

IES-R intrusion

  

2.93

 

0.038

0.06

2.14

 

0.075

0.05

 

CTQ

 

0.17

0.019

  

0.23

0.014

 
 

HCCt1

 

0.16

0.048

  

0.16

0.054

 
 

HCCt1*CTQ

 

−0.05

0.998

  

−0.07

0.784

 
      

age

−0.05

0.705

 

IES-R avoidance

  

2.97

 

0.036

0.06

2.14

 

0.075

0.05

 

CTQ

 

0.24

0.048

  

0.23

0.014

 
 

HCCt1

 

0.16

0.116

  

0.16

0.058

 
 

HCCt1*CTQ

 

−0.06

0.823

  

−0.07

0.784

 
      

age

−0.05

0.705

 

IES-R hyperarousal

  

2.93

 

0.038

0.06

2.14

 

0.082

0.05

 

CTQ

 

0.17

0.686

  

0.23

0.061

 
 

HCCt1

 

0.16

0.046

  

0.16

0.042

 
 

HCCt1*CTQ

 

−0.05

0.989

  

−0.07

0.225

 
      

age

−0.05

0.666

 
  1. a without controlling for age, b after controlling for age, CTQ childhood trauma questionnaire, Pre-MVC->HCCt1 hair segment before the accident (0-3 Months), PDS posttraumatic diagnostic scale, IES-R impact of event scale – Revised.
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