"Non-HDL Cholesterol, Guideline Targets, and Population Percentiles for Secondary Prevention in a Clinical Sample of 1.3 Million Adults The Very Large Database of Lipids (VLDL-2 Study)"
JACC Aug 2013
http://content.onlinejacc.org/article.aspx?articleID=1731125 
"Conclusions  There is significant patient-level discordance between non-HDL-C and LDL-C percentiles at lower LDL-C and higher triglycerides; a finding with implications for treatment of high-risk patients. Current non-HDL-C cutpoints for high-risk patients may need to be lowered to match percentiles of LDL-C cutpoints. Relatively small absolute reductions in non-HDL-C cutpoints result in substantial reclassification of patients to higher treatment categories with potential implications for risk assessment and treatment."