RT Journal Article SR Electronic T1 Chronic obstructive pulmonary disease and comorbidities: a large cross-sectional study in primary care JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP e321 OP e328 DO 10.3399/bjgp17X690605 VO 67 IS 658 A1 Ula Chetty A1 Gary McLean A1 Deborah Morrison A1 Karolina Agur A1 Bruce Guthrie A1 Stewart W Mercer YR 2017 UL http://bjgp.org/content/67/658/e321.abstract AB Background Chronic obstructive pulmonary disease (COPD) is common, and a major cause of morbidity and mortality worldwide. Recent studies suggest that comorbidities of COPD increase the risk of hospitalisation, polypharmacy, and mortality, but their estimated prevalence varies widely in the literature.Aim To evaluate the prevalence of 38 physical and mental health comorbidities in people with COPD, and compare findings with those for people without COPD in a large nationally representative dataset.Design and setting A cross-sectional data analysis on 1 272 685 adults in Scotland from 314 primary care practices.Method Data on COPD, along with 31 physical and seven mental health comorbidities, were extracted. The prevalence of comorbidities was compared between people who did, and did not, have COPD, standardised by age, sex, and socioeconomic deprivation.Results From the total sample, 51 928 patients had COPD (4.1%). Of these, 86.0% had at least one comorbidity, compared with 48.9% of people without COPD. Of those with COPD, 22.3% had ≥5 comorbid conditions compared with 4.9% of those who did not have COPD (adjusted odds ratio 2.63, 95% confidence interval = 2.56 to 2.70). In total, 29 of the 31 physical conditions and six of the seven mental health conditions were statistically significantly more prevalent in people who had COPD than those who did not.Conclusion Patients with COPD have extensive associated comorbidities. There is a real need for guidelines and health care to reflect this complexity, including how to detect those common comorbidities that relate to both physical and mental health, and how best to manage them. Primary care, which is unique in terms of offering expert generalist care, is best placed to provide this integrated approach.