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Table 3 Prediction of self-perceived recovery by psychological factors at baseline

From: Importance of psychological factors for the recovery from a first episode of acute non-specific neck pain - a longitudinal observational study

  B (SE) Exp B (Odds Ratio) 95 % CI Exp B p
Model 1: psychological factors as independent variables
PGIC 1 week ( N  = 77):
Nagelkerke R2 = 0.02; AUC = 0.58 (95 % CI 0.43–0.72; p = 0.321)
 BQ4: anxiety −0.09 (0.15) 0.92 0.68–1.24 0.572
 BQ5: depression 0.07 (0.12) 1.07 0.85–1.35 0.579
 BQ6: fear avoidance −0.01 (0.12) 0.99 0.78–1.25 0.928
 BQ7: locus of control 0.09 (0.12) 1.09 0.87–1.36 0.459
PGIC 1 month ( N  = 82):
Nagelkerke R2 = 0.17; AUC = 0.76 (95 % CI 0.62–0.90; p = 0.002)
 BQ4: anxiety 0.44 (0.21) 1.55 1.04–2.32 0.033
 BQ5: depression −0.18 (0.16) 0.83 0.61–1.14 0.247
 BQ6: fear avoidance −0.33 (0.18) 0.72 0.51–1.02 0.061
 BQ7: locus of control 0.25 (0.16) 1.28 0.93–1.77 0.529
PGIC 3 months ( N  = 80):
Nagelkerke R2 = 0.22; AUC= 0.83 (95 % CI 0.72–0.93; p = 0.001)
 BQ4: anxiety 0.14 (0.22) 1.15 0.74–1.78 0.529
 BQ5: depression −0.41 (0.21) 0.67 0.45–1.00 0.049
 BQ6: fear avoidance −0.09 (0.18) 0.91 0.64–1.29 0.597
 BQ7: locus of control 0.25 (0.18) 1.28 0.91–1.81 0.163
Model 2: signifiant factors of model 1 and age and baseline pain as independent variables
PGIC 1 week ( N  = 77):
Nagelkerke R2 = 0.001; AUC= 0.52 (95 % CI 0.39–0.66; p = 0.763
 Age −0.001 (0.02) 1.00 0.96–1.04 0.938
 Pain at baseline 0.03 (0.14) 0.97 0.74–1.28 0.841
PGIC 1 month ( N  = 83):
Nagelkerke R2 = 0.18; AUC= 0.74 (95 % CI 0.58–0.90; p = 0.005)
 BQ 4: anxiety 0.12 (0.12) 1.12 0.89–1.41 0.321
 Age −0.05 (0.02) 0.95 0.91–0.99 0.021
 Pain at baseline 0.20 (0.16) 1.22 0.89–1.68 0.225
PGIC 3 months ( N  = 81):
Nagelkerke R2 = 0.21; AUC= 0.80 (95 % CI 0.69–0.91; p = 0.002)
 BQ 5: depression −0.26 (0.12) 0.77 0.61–0.98 0.037
 Age −0.04 (0.03) 0.97 0.92–1.02 0.163
 Pain at baseline −0.13 (0.20) 0.88 0.60–1.31 0.536
  1. Logistic regressions with PGIC (0 = not improved, 1 = improved) of each time point as dependent variable and the psychological factors at baseline as independent variables. Multicollinearity diagnostics model 1/model 2: Tolerance: 0.39-0.76/0.89-1.00, VIF: 1.31-2.59/1.00-1.13. Numbers in bold indicate significant results.
  2. AUC area under the receiver operating curve
  3. BQ Bournemouth questionnaire
  4. PGIC patient global impression of change