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Table 1 Comorbidity Cohort (2C) study measures

From: Comorbidity Cohort (2C) study: Cardiovascular disease severity and comorbid osteoarthritis in primary care

   Survey measures
Data source Factors Baseline & 12-month follow-up Short monthly**
Clinical records 8 disease cohorts · Read code classification*  
Consultation comorbidity · Kadam severity classification  
Blood tests & investigations · Read code classification*  
Drugs prescribed · British National Formulary (BNF)  
Referrals · Read code classification*  
Survey data General measures · Short form 12 (SF-12) health survey · SF-12
· Short form 36 (SF-36) health survey – Q2 only · SF-36, Q2
· EuroQol (EQ-5D)  
· Hospital Anxiety and Depression (HAD) scale  
· Medical Outcomes Study (MOS) - Sleep Scale · Qs 1 & 2 only
· Functional Assessment of Chronic Illness (FACIT) – · Qs 5 & 6 only
Fatigue  
· Brief Illness Perception Questionnaire (B-IPQ)  
· Social Networks  
Cardiovascular measures · Seattle Angina Questionnaire (SAQ), UK version · Qs 2 & 3 only
· Kansas City Cardiomyopathy Questionnaire (KCCQ) · Qs 3 & 7 only
· Rose Angina Questionnaire  
· Palpitations (based on [50]) · Q1 only
· Vertigo Severity Scale (VSS) · Q1 only
Pain and OA measures · Pain manikin, pain frequency & pain intensity · Pain frequency
· Knee Injury & Osteoarthritis Outcome Score (KOOS) –  
Physical Function Shortform  
· Hip Injury & Osteoarthritis Outcome Score (HOOS) –  
Physical Function Shortform  
  Lifestyle · Body Mass Index (BMI), Alcohol, Smoking  
· Short Questionnaire to Assess Health Enhancing · Qs 2a, 2c, 2e only
Physical Activity (SQUASH)  
  Other · Eyesight/hearing  
· Body shape  
Survey & clinical records Socio-demographic · Age, Gender, Deprivation  
  1. *Read code classification is a standard clinical coding system used in British general practice; **question numbers refer to the original questionnaire.