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Table 5 Utility of chiropractors’ prediction of patients not improving as categorised by MCIC in BQ total* scores split by complaint

From: Prognostic accuracy of clinicians for back, neck and shoulder patients in routine practice

  Back Neck Shoulder
Week 4    
N 173 45  
OR (95% CI) 1.7 (0.8 to 3.8) 3.2 (0.7 to 15.0) nc
Nagelkerke R2 0.01 0.07 nc
+ve Likelihood ratio 0.0 0.0 nc
−ve Likelihood ratio ** ** nc
AUC 0.5 (0.4 to 0.6) 0.6 (0.4 to 0.8) nc
Week 12    
N 124   
OR (95% CI) 1.7 (0.6 to 4.9)    § nc
Nagelkerke R2 0.01 § nc
+ve Likelihood ratio 0.0 § nc
−ve Likelihood ratio ** § nc
AUC 0.5 (0.4 to 0.7) § nc
  1. *(≤ 47% (Back), ≤ 36% (Neck)), nc=not calculated as no MCIC, **unable to calculate as divided by 0, § unable to calculate due to less than 5 in one cell, AUC=Area under curve.