Table 2

General practitioner study form return rates and analysable data by HES diagnostic groups
HES Diagnosis (ICD-10 code)
Ischaemic Heart Disease (I20-I25) Venous Thromboembolism (I26, I80-I82) Cerebrovascular Disease (G45, I60-I69) No Vascular Disease
Study forms sent to general practitioners N=1004 N=1004 N=1004 N=997
Study forms returned 90.4% (908) 90.3% (907) 90.1% (905) 92.1% (918)
% of returned study forms with analysable diagnostic data 87.7% (796) 83.9% (761) 84.7% (766) 94.1% (864)

HES: hospital episode statistics; ICD-10: International Classification of Diseases (10th Revision).

Wright et al.

Wright et al. BMC Medical Research Methodology 2012 12:161   doi:10.1186/1471-2288-12-161

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