Comparison of ICD9 Codes Between two sites for patients with Type 2 Diabetes. The graphic shows the prevalence of ICD-9 codes, grouped into ICD-9 code sections (n=120). The linear regression line drawn between these two populations show that these two groups are similar, with a slope slightly favoring a higher prevalence of more codes at Northwestern (NU) than Vanderbilt (VU).
McCarty et al. BMC Medical Genomics 2011 4:13 doi:10.1186/1755-8794-4-13