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Table 4 Models predicting phase 2 mental 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=.06 Model 2 R 2=.23 Model 3 R 2=.40
  b SEMb β t b SEMb β t b SEMb β t
Age .24 .06 .19 4.19** .17 .05 .13 3.06* .17 .05 .13 3.58**
Body Mass Index 15 .10 .07 1.40 -- -- -- -- -- -- -- --
Mental Health Function (Phase 1)   14. .07 .12 2.12* .14 .05 .12 3.02**
Social Desirability   .32 .14 .11 2.36* .32 .12 .11 2.65**
Negative Emotionality   .08 .03 .11 2.97** .08 .03 .13 2.76**
Social Support    -.38 .10 -.17 -63**
Physical Symptoms (Phase 2)    -.33 .04 -.35 -8.12**
Post-Traumatic Stress Disorder Symptoms (Phase 2)    
  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 = 0.40. For the model predicting mental health function at Phase 2 we included the following Phase 1 variables: gender, age, BMI, mental health function at Phase 1, social desirability, negative emotionality, absorption, social support, approach coping, avoidance coping, pre-deployment life events, alcohol misuse, physical symptoms, diastolic blood pressure at Phase 1 and smoking. We also included the following Phase 2 variables: deployment experiences, combat experiences, physical symptoms and PTSD symptoms. Non-significant predictors were eliminated using a backward elimination method. Higher scores indicate better mental function.