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Table 3 Multiple hierarchical regression with blockwise entry with PIPS-Avoidance and PIPS-Fusion 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     .310***
 Constant 14.783 8.501  
 Age −0.019 0.090 −.014  
 Sex 3.930 2.056 .121  
 PCS 0.692 0.087 .570***  
 TSK 0.000 0.139 .000  
Step 3     .038**
 Constant 22.476 8.864  
 Age −0.024 0.087 −.017  
 Sex 2.673 2.044 .082  
 PCS 0.635 0.094 .523***  
 TSK −0.195 0.151 −.102  
 PIPS-Avoidance 0.334 0.108 .254**  
 PIPS-Fusion −0.457 0.282 −.108  
  1. PCS: Pain Catastrophizing Scale; TSK: Tampa Scale of Kinesiophobia; PIPS: Psychological Inflexibility in Pain Scale (Avoidance: Subscale Avoidance; Fusion: Subscale Fusion without item 3)
  2. Notes: corrected R2 (full model) = .366; * p < .05, ** p < .01, *** p < .001