Appendix I – WCB-Alberta Continuum of Care Model for the Management of Claimants with Soft-Tissue Disorders (2010 version)


Appendix II: Final Rules in the Machine Learning Model

The output of the Repeated Incremental Pruning to Produce Error Reduction (RIPPER) analysis is a series of first-order logical statements following an ‘IF – THEN’ framework for recommendations. We will show both the positive AND negative rules in the model (i.e rules for what programs should be considered as well as what rules should definitely not be considered).

Positive Rules:

  1. IF: Worker is Job AttachedANDSF36 Item 4 =2 or 3 AND SF36 Item 7>2ANDPain Visual Analogue Scale= 1 or 2 AND National Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) THEN consider Worksite-Based Program
  2. IF: Worker is Job AttachedANDSF36 Item 14= 4 or 5 ANDSF36 Item 7> 2ANDSF36 Item 12=3 THEN consider Worksite-Based Intervention
  3. IF: Worker is Job AttachedANDSF36 Item 4= 2 or 3 ANDSF36 Item 7 >2AND National Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 2= 2 or 3 ANDSF36 Item 5= 2 or 3 THEN considerWorksite-Based Intervention
  4. IF: Worker is Job AttachedANDSF36 Item 14= 3 or 4 ANDSF36 Item 4=2 ANDSF36 Item 2= 2 or 3 THEN consider Worksite-Based Intervention
  5. IF: Worker is Job AttachedANDSF36 Item 21= 3 or 4 ANDSF36 Item 4>2THEN consider Worksite-Based Intervention
  6. IF: Worker is Job AttachedANDSF36 Item 14= 4 or 5 ANDSF36 Item 4=2 THEN consider Worksite-Based Intervention
  7. IF: Worker is Job AttachedANDSF36 Item 4 = 2 or 3ANDSF36 Item 21 = 4THEN consider Worksite-Based Intervention
  8. IF: Worker is Job AttachedANDInjury Duration Between 134 - 197 daysANDSF36 Item 12 = 2 - 3 ANDSF36 Item 4=2 ANDSF36 Item 72THEN consider Worksite-Based Intervention
  9. IF: Worker is Job AttachedANDSF36 Item 2= 2 or 3 ANDSF36 Item 4>2THEN consider Worksite-Based Intervention
  10. IF: Worker is Job AttachedANDSF36 Item 14= 3 or 4 ANDSF36 Item 12= 1 or 2 ANDSF36 Item 7>2THEN consider Worksite-Based Intervention
  11. IF: Worker is Job AttachedANDSF36 Item 21= 3 or 4 ANDSF36 Item 14=4 THEN consider Worksite-Based Intervention
  12. IF: Worker is Job AttachedANDSF36 Item 4= 2 or 3ANDInjury Duration Between 50 - 90 daysANDSF36 Item 72ANDSF36 Item 18= 3 or 4 THEN consider Worksite-Based Intervention
  13. IF: Worker is Job AttachedANDSF36 Item 4= 2 or 3 ANDSF36 Item 14 >4THEN consider Worksite-Based Intervention
  14. IF: Worker is Job AttachedANDPain Disability Index Occupational Item= 7 or 8 ANDSF36 Item 4=2 ANDNo Modified Work AvailableTHEN consider Worksite-Based Intervention
  15. IF: Worker is Job AttachedANDSF36 Item 14= 4 or 5 ANDModified Work isAvailableANDPain Disability Index Occupational Item=3 or 4 THEN consider Worksite-Based Intervention
  16. IF: Worker is Job AttachedANDSF36 Item 4= 2 or 3 ANDSF36 Item 18=3THEN consider Worksite-Based Intervention
  17. IF: Worker is Job AttachedANDSF36 Item 14= 3 or 4 ANDSF36 Item 21=4 ANDSF36 Item 2 = 3 or 4 THEN consider Worksite-Based Intervention
  18. IF: Worker is Job AttachedANDSF36 Item 18= 4 or 5 ANDSF36 Item 4>2THEN consider Worksite-Based Intervention
  19. IF: Worker is Job AttachedANDSF36 Item 12= 2 or 3 ANDSF36 Item 14>4THEN consider Worksite-Based Intervention
  20. IF: Worker is Job AttachedANDSF36 Item 14= 4 or 5 ANDSF36 Item 4= 2 or 3 ANDSF36 Item 18= 4 or 5 THEN consider Worksite-Based Intervention
  21. IF: Worker is Job AttachedANDSF36 Item 14= 4 or 5 ANDSF36 Item 25 =1 or 2 THEN consider Worksite-Based Intervention
  22. IF: Worker is Job AttachedANDSF36 Item 18= 3 or 4 ANDInjury Duration Between 50 - 90 daysANDSF36 Item 21=4THEN consider Worksite-Based Intervention
  23. IF: Worker is Job AttachedANDSF36 Item 14= 3 or 4 ANDSF36 Item 72ANDSF36 Item 2= 3 or 4 ANDModified Work is Available THEN consider Worksite-Based Intervention
  24. IF: Worker is Job AttachedANDPain Visual Analogue Scale=1 ANDSF36 Item 25= 4 or 5 THEN consider Worksite-Based Intervention
  25. IF: Worker is Job AttachedANDInjury Duration 181 daysANDCurrently workingANDNo Modified Work is AvailableANDSF36 Item 5>1THEN consider Worksite-Based Intervention
  26. IF: Worker is Not Job AttachedANDSF36 Item 5= 0 or 1 ANDPain Visual Analogue Scale= 7 or 8 THEN consider Complex Chronic Pain Management Program
  27. IF: Worker is Not Job Attached) ANDSF36 Item 12= 1 or 2 THEN consider Complex Chronic Pain Management Program
  28. IF: Worker is Not Job AttachedANDInjury Duration Between 660 - 1375 daysANDSF36 Item 2= 3 or 4 THEN consider Complex Chronic Pain Management Program
  29. IF: Worker is Not Job AttachedANDSF36 Item 2 = 4 or 5 THEN consider Complex Chronic Pain Management Program
  30. IF: Worker is Not Job AttachedANDSF36 Item 7 = 1 or 2 THEN consider Complex Chronic Pain Management Program
  31. IF: Worker is Not Job AttachedANDSF36 Item 25= 4 or 5 ANDNational Classification code = 6000’s (Sales AND Service Occupations) ANDSF36 Item 12=2THEN consider Complex Chronic Pain Management Program
  32. IF: Worker is Not Job AttachedANDSF36 Item 18= 2 or 3 ANDSF36 Item 7= 2 or 3 ANDSF36 Item 4= 1 or 2 THEN consider Complex Chronic Pain Management Program
  33. IF: SF36 Item 7 2ANDSF36 Item 14= 1 or 2 THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  34. IF: Worker is Job AttachedANDSF36 Item 5= 2 or 3 ANDModified Work is AvailableTHEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  35. IF: Worker is Job AttachedANDSF36 Item 7= 2 or 3 ANDModified Work isAvailable THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  36. IF: Worker is Job AttachedANDSF36 Item 14=2 or 3 ANDModified Work is Available THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  37. IF: Worker is Job AttachedANDModified Work is AvailableAND National Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 14= 2 or 3 ANDInjury Duration Between 197 - 404 days THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  38. IF: Worker is Job AttachedANDSF36 Item 21= 3 or 4 ANDSF36 Item 12>2THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  39. IF: Worker is Job AttachedANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDModified Work is AvailableANDSF36 Item 7= 2 or 3 ANDSF36 Item 12>2THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  40. IF: Worker is Job AttachedANDSF36 Item 2= 2 or 3 ANDModified Work is Available THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  41. IF: Worker is Job AttachedANDSF36 Item 12= 2 or 3 ANDModified Work is Available THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  42. IF: Worker is Job AttachedANDModified Work is AvailableANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 12= 2 or 3 ANDSF36 Item 21=4 THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  43. IF: Worker is Job AttachedANDModified Work is AvailableANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 4= 1 or 2 ANDSF36 Item 14=2 THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  44. IF: Worker is Job AttachedANDSF36 Item 2= 4 or 5 ANDSF36 Item 12>2THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  45. IF: Worker is Job AttachedANDModified Work is AvailableANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 12 = 2 or 3 ANDSF36 Item 4=2THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  46. IF: Worker is Job AttachedANDSF36 Item 21= 4 or 5 ANDModified Work is Available THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  47. IF: Worker is Job AttachedANDModified Work is AvailableANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 14= 2 or 3 ANDInjury Duration Between 90 - 134 days THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  48. IF: Worker is Job AttachedANDModified Work is AvailableANDPain Disability Index Occupational Item= 6 or 7 ANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) ANDSF36 Item 2= 3 or 4 THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  49. IF: Worker is Job AttachedANDModified Work is AvailableANDSF36 Item 2= 2 or 3 ANDSF36 Item 18= 4 or 5 THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  50. IF: Worker is Job AttachedANDModified Work is AvailableANDSF36 Item 2= 2 or 3ANDInjury Duration Between 197 - 404 days THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  51. IF: Worker is Job AttachedANDSF36 Item 12= 1 or 2 ANDSF36 Item 2=3 ANDModified Work is Available THEN consider Hybrid Functional Restoration Program with Integrated Workplace Component
  52. IF: Worker is Job AttachedANDPain Disability Index Occupational Item= 7 or 8ANDSF36 Item 24THEN consider Community Single Service Provider
  53. IF: Worker is Currently WorkingANDSF36 Item 52ANDSF36 Item 4>2AND Pain Disability Index Occupational Item <2THEN consider Community Single Service Provider
  54. IF: Worker is Currently WorkingANDSF36 Item 52ANDPain Visual Analogue Scale=3 ANDSF36 Item 184ANDInjury Duration Between 50 – 90 daysTHEN consider Community Single Service Provider
  55. IF: SF36 Item 42ANDSF36 Item 14=4ANDPain Disability Index Occupational Item<2THEN considerCommunity Single Service Provider
  56. IF: Worker is Currently Working AND SF36 Item 52AND Injury Duration Between 50- 90 daysANDSF36 Item 184ANDNational Occupational Classification code = 7000’s (Trades, Transport and Related Occupations) THEN consider Community Single Service Provider
  57. IF: Worker is Not Job AttachedANDSF36 Item 42ANDSF36 Item 142ANDSF36 Item 52THEN consider Vocational or No Further Rehabilitation
  58. IF: SF36 Item 144ANDSF36 Item 21=4ANDSF36 Item 72ANDInjury Duration < 51 daysTHEN consider Community Single Service Provider
  59. IF: Injury duration1374 daysTHEN considerVocational or No Further Rehabilitation
  60. IF:Injury Duration Between 660 - 1375 daysANDSF36 Item 4<2ANDNo Modified Work is AvailableTHEN consider Vocational or No Further Rehabilitation
  61. Default (i.e. All Other Options)THEN consider Functional Restoration Program

Negative Rules:

  1. IF: Worker is Currently WorkingANDSF36 Item 12 = 2 or 3THEN DON’T consider Hybrid Functional Restoration Program with Integrated Workplace Component
  2. IF: Worker is Currently WorkingANDSF36 Item 5 = 2 or 3THEN DON’T consider Hybrid Functional Restoration Program with Integrated Workplace Component
  3. IF: Worker is Currently WorkingANDSF36 Item 13 = 1 or 2THEN DON’T consider Hybrid Functional Restoration Program with Integrated Workplace Component
  4. IF: Worker is Currently WorkingANDSF36 Item 7 = 2 or 3THEN DON’T consider Hybrid Functional Restoration Program with Integrated Workplace Component
  5. IF: Worker is Currently WorkingANDSF36 Item 13 = 2 or 3 THEN DON’T consider Hybrid Functional Restoration Program with Integrated Workplace Component
  6. IF: SF36 Item 21= 5 or 6AND Diagnosis = Joint DisorderTHEN DON’T consider Complex Chronic Pain Management Program
  7. IF: Injury Duration Between 945 - 3275 daysANDDiagnosis = Joint DisorderANDSF36 Item 5=1 or 2 THEN DON’T consider Complex Chronic Pain Management Program
  8. IF: Pain Visual Analogue Scale = 9 or 10ANDInjury Duration Between 946- 3275 days THEN DON’T consider Complex Chronic Pain Management Program
  9. IF: SF36 Item 25=2 or 3 ANDDiagnosis = Sprain/Strain) THEN DON’T consider Complex Chronic Pain Management Program
  10. IF: SF36 Item 18=1 or 2 ANDDiagnosis = Joint Disorder THEN DON’T consider Complex Chronic Pain Management Program
  11. IF: SF36 Item 7=2 or 3 ANDDiagnosis = Sprain/Strain) THEN DON’T consider Complex Chronic Pain Management Program
  12. IF: Pain Visual Analogue Scale=9 or 10ANDInjury Duration Between 375- 946 days THEN DON’T consider Complex Chronic Pain Management Program
  13. IF: SF36 Item 21=5 or 6 ANDDiagnosis = Sprain/Strain THEN DON’T consider Complex Chronic Pain Management Program
  14. IF: Injury Duration Between 946- 3275 daysANDDiagnosis = Joint DisorderANDSF36 Item 7=2 or 3 THEN DON’T consider Complex Chronic Pain Management Program
  15. IF: SF36 Item 5=1 or 2 ANDDiagnosis = Joint Disorder THEN DON’T consider Complex Chronic Pain Management Program
  16. IF: SF36 Item 7=1 or 2 ANDDiagnosis = Sprain/Strain) THEN DON’T consider Complex Chronic Pain Management Program
  17. IF: Pain Disability Index Occupational Item = 8 or 9 ANDDiagnosis = Joint DisorderTHEN DON’T consider Complex Chronic Pain Management Program
  18. IF: SF36 Item 21=6 ANDInjury Duration Between 946- 3275 daysANDSF36 Item 12=2 THEN DON’T consider Complex Chronic Pain Management Program
  19. IF: Worker is Not Job Attached AND Diagnosis = OtherTHEN DON’T consider Community Single Service Provider
  20. IF: Worker is Currently WorkingANDDiagnosis = Joint DisorderTHEN DON’T consider Vocational or No Further Rehabilitation

Appendix III:Screenshot of the Computer-BasedClinical Decision Support Tool