Identifying depression in primary care: a comparison of different methods in a prospective cohort study.

DG, Struthers AD. Echocardiography in chronic heart failure in the community. Quart J Med 1993;86:17-23. 3 McMurray J, Hart W, Rhodes G. An evaluation of the economic cost of heart failure to the National Health Service in the United Kingdom. Br J Med Econ 1993;6:99-110. 4 Remes J, Miettinen H, Reunanen A, Pyorala K. Validity of clinical diagnosis of heart failure in primary health care. Eur Heart J 1991;12:315-21. 5 Murphy JJ, Frain JP, Ramesh P, Siddiqui RN, Bossingham CM. Open-access echocardiography to general practitioners for suspected heart failure. Br J Gen Pract 1996;46:475-6. 6 Clarke K, Gray D, Hampton JR. Evidence of inadequate investigation and treatment of patients with heart failure. Br Heart J 1994;71:584-7. 7 Horne R, Coombes I, Davies G, Hankins M, Vincent R, et al. Barriers to optimum management of heart failure by general practitioners. Br J Gen Pract 1999;49:353-7. 8 Hobbs FD, Jones MI, Allan TF, Wilson S, Tobias R. European survey of primary care physician perceptions on heart failure diagnosis and management (Euro-HF). Eur Heart J 2000;21:1877-87. 9 Houghton AR, Cowley AJ. Why are ACE inhibitors underutilized in the treatment of heart failure by general practitioners? Int J Cardiol 1997;59:7-10. 10 Hobbs FD. Management of heart failure: evidence versus practice. Does current prescribing provide optimal treatment for heart failure patient? Br J Gen Pract 2000;50:735-42. 11 Patton MQ. Qualitative evaluation and research methods. 2nd ed. London: Sage, 1990. 12 Melia K. Producing “plausible stories”: interviewing student nurses. In: Miller G, Dingwall R, eds. Context and method in qualitative research. London: Sage, 1997:26-36. 13 Glasser BG, Strauss AL. The discovery of grounded theory: strategies for qualitative research. Chicago: Aldine, 1967. 14 Bloor M. Techniques of validation in qualitative research: a critical commentary. In: Miller G, Dingwall R, eds. Context and method in qualitative research. London: Sage, 1997:37-50. 15 Task Force of the Working Group on Heart Failure of the European Society of Cardiology. Guidelines for the treatment of heart failure . Eur Heart J 1997;18:736-53. 16 Cleland JGF, McGowan J, Clark A. The evidence for â blockers in heart failure. BMJ 1999;824-5. 17 Rimington H, Adam G, Chambers J. Open-access echocardiography. Lancet 1996;348:555-6. 18 Freeman AC, Sweeney K. Why general practitioners do not implement evidence: qualitative study. BMJ 2001;323:1100-2. 19 Department of Health. The national service framework for coronary heart disease. London: Stationery Office, 2000. (Accepted 4 November 2002)