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Table 3 Models predicting phase 2 physical function

From: What pre-deployment and early post-deployment factors predict health function after combat deployment?: a prospective longitudinal study of Operation Enduring Freedom (OEF)/Operation Iraqi Freedom (OIF) soldiers

 

Model 1 R 2=.05

Model 2 R 2=.18

Model 3 R 2=.26

 

b

SEMb

β

t

b

SEMb

β

t

b

SEMb

β

t

Age

-.16

.04

-.17

-.3.63**

-.15

.04

-.16

-3.51**

-.15

.04

-.16

-3.81**

Body Mass Index

-.13

.09

-.09

1.52**

-.04

.08

-.03

-.50

-.03

.08

-.02

-.41

Gender

−2.43

1.19

-.10

-2.04*

--

--

--

--

--

--

--

--

Physical Function (Phase 1)

 

.37

.07

-.25

5.17**

.35

.07

.24

5.34**

Approach Coping

 

-.27

.13

-.10

-2.07*

--

--

--

--

Physical Symptoms (Phase 1)

 

-.28

.09

-.14

-3.13**

--

--

--

--

Smoking

 

.61

.78

.04

.79

.35

.66

.02

.52

Systolic Blood Pressure reactivity after a stressor

 

.14

.05

.15

3.13**

.11

.04

.12

2.58*

Physical Symptoms (Phase 2)

  

.38

.06

-.24

-5.79**

Injury

  

-2.46

.98

-.16

-2.50*

  1. ** P < .001, * P < .05. Each successive step accounted for a significant increase in variance over the prior model (all ps < .05 or better). Overall final model adjusted R2 = 0.26. For the model predicting physical health function at Phase 2 we included the following Phase 1 variables: gender, age, body mass index (BMI), number of previous deployments, physical health function at Phase 1, pre-deployment life events, approach coping, avoidance coping, physical symptoms, systolic blood pressure, systolic blood pressure reactivity to a stressor, and smoking. We also included the following Phase 2 variables: PTSD symptoms, physical symptoms and injury. Non-significant predictors were eliminated using a backward elimination method. Higher scores indicate better physical function.