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Table 3 Cross tables, sensitivity, and specificity for the number of patients using health care as self-reported and from administrative databases

From: Good agreement between questionnaire and administrative databases for health care use and costs in patients with osteoarthritis

Health care     Sensitivity Specificity
General practitioner      
   GP contacts   YES (PT) NO (PT)   
  YES (DB) 38 3 93% 56%
  NO (DB) 4 5   
Medications      
   Paracetamol   YES (PT) NO (PT)   
  YES (DB) 23 0 100% 59%
  NO (DB) 11 16   
   Opiates   YES (PT) NO (PT)   
  YES (DB) 4 5 44% 93%
  NO (DB) 3 38   
   Paracetamol & opiates*   YES (PT) NO (PT)   
  YES (DB) 4 5 44% 93%
  NO (DB) 3 38   
   NSAIDs   YES (PT) NO (PT)   
  YES (DB) 17 1 94% 84%
  NO (DB) 5 27   
   Pantoprazole   YES (PT) NO (PT)   
  YES (DB) 2 1 67% 100%
  NO (DB) 0 47   
   Omeprazole   YES (PT) NO (PT)   
  YES (DB) 12 3 80% 91%
  NO (DB) 3 32   
   Amitriptyline   YES (PT) NO (PT)   
  YES (DB) 2 1 67% 98%
  NO (DB) 1 46   
Hospital services      
   Emergency visits   YES (PT) NO (PT)   
  YES (DB) 2 0 100% 100%
  NO (DB) 0 48   
   OA-related inpatient events   YES (PT) NO (PT)   
  YES (DB) 2 0 100% 100%
  NO (DB) 0 48   
   Orthopaedics   YES (PT) NO (PT)   
  YES (DB) 7 3 70% 85%
  NO (DB) 6 34   
   Rheumatology   YES (PT) NO (PT)   
  YES (DB) 2 0 100% 98%
  NO (DB) 1 47   
   Medical imaging services†   YES (PT) NO (PT)   
  YES (DB) 10 4 71% 81%
  NO (DB) 7 29   
  1. *Combination drug
  2. †n = 48
  3. Abbreviations: GP, general practitioner; DB, database; PT, patient; Opiates=codeine, DHC continus; NSAIDs, non-steroidal anti-inflammatory drug = diclofenac, voltaren, ibuprofen, naproxen