Table 1

Comorbidity Cohort (2C) study measures
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

*Read code classification is a standard clinical coding system used in British general practice; **question numbers refer to the original questionnaire.

Prior et al.

Prior et al. BMC Health Services Research 2012 12:295   doi:10.1186/1472-6963-12-295

Open Data