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Table 6 Multiple hierarchical regression with blockwise entry with CPAQ entered in the last block

From: The Psychological Inflexibility in Pain Scale (PIPS) – validation, factor structure and comparison to the Chronic Pain Acceptance Questionnaire (CPAQ) and other validated measures in German chronic back pain patients

  B SE B β ΔR2
Step 1     .040*
 Constant 36.246 7.234  
 Age −0.186 0.105 −.132  
 Sex 4.358 2.424 .134  
Step 2     .342***
 Constant 15.939 7.734  
 Age −0.009 0.087 −.006  
 Sex 3.391 1.970 .104  
 PCS 0.606 0.092 .499***  
 PIPS-Avoidance 0.273 0.097 .207**  
 PIPS-Fusion −0.453 0.282 − .107  
Step 3     .003
 Constant 24.005 11.782  
 Age −0.008 0.087 −.006  
 Sex 3.414 1.971 .105  
 PCS 0.576 0.098 .474***  
 PIPS-Avoidance 0.192 0.132 .146  
 PIPS-Fusion −0.490 0.286 −.116  
 CPAQ −0.071 0.079 −.099  
  1. PCS: Pain Catastrophizing Scale; CPAQ: Chronic Pain Acceptance Questionnaire; PIPS: Psychological Inflexibility in Pain Scale (Avoidance: Subscale Avoidance; Fusion: Subscale Fusion without item 3)
  2. Notes: corrected R2 (full model) = .385; * p < .05, ** p < .01, *** p < .001