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Table 3 Spearman’s correlations between the single-item fear avoidance measure and all items of FAB-TBI, at Baseline and Posttreatment

From: Criterion validity of a single-item measure of fear avoidance behavior following mild traumatic brain injury

FAB-TBI Item

Factor*

Correlation (ρ) at baseline

Correlation (ρ) posttreatment

1. I have put parts of my life on hold.

Activity avoidance

0.46

0.51

2. I have avoided my usual activities.

Activity avoidance

0.57

0.54

3. I cannot do activities which (might) make my symptoms worse.

Activity avoidance

0.64

0.67

4. My work might harm my brain.

Activity avoidance/ cogniphobia

0.47

0.27

5. I should not do my normal work with my present symptoms.

Activity avoidance

0.42

0.49

6. My head pain is telling me that I have something dangerously wrong.

Cogniphobia

0.35

0.31

7. I worry that when I have to think or concentrate too hard that I will bring on a headache.

Cogniphobia

0.28

0.37

8. My headaches put my head and brain at risk for the rest of my life.

Cogniphobia

0.37

0.23

9. I purposely avoid doing activities that might elicit a headache.

Cogniphobia

0.59

0.59

10. I’m afraid that I might make my headache pain worse by concentrating too much or being too mentally active.

Cogniphobia

0.39

0.48

11. I wouldn’t have this much pain if there weren’t something potentially dangerous going on in my head.

Cogniphobia

0.41

0.37

12. I avoid external reminders of a stressful experience (for example, people, places, conversations, activities, objects, or situations).

Failed to load onto any factor

0.46

0.40

13. I stop what I am doing when my symptoms start to get worse.

Symptom avoidance

0.45

0.41

14. If I know that something will make my symptoms worse I don’t do it anymore.

Symptom avoidance

0.62

0.61

15. Because of my symptoms most days I spend more time resting than doing activities.

Activity avoidance

0.52

0.53

16. Most days my symptoms keep me from doing much at all.

Activity avoidance

0.59

0.37

  1. Noteρ = Spearman’s Rank Correlation Coefficient. Correlations between the single-item fear avoidance measure with every item of the FAB-TBI, at baseline and posttreatment. *Factor structure was originally described by Snell et al. [11]. Factors include activity avoidance, cogniphobia, and symptom avoidance