Correction

Comments on ‘Evaluating the added predictive ability of a new marker: From area under the ROC curve to reclassification and beyond’ by M. J. Pencina et al ., Statistics in Medicine , by Nancy R. Cook ( Statist. Med . 2007. DOI: 10.1002/sim.2987 ). It has come to our attention that this published article contained an error. The row and column headings in Table I were incorrectly transposed during production. The correct table layout is as follows: I Observed risk (per cent) in reclassified categories for models with and without HDL in Framingham data.Model with HDL Model without HDL <6 per cent 6–20 per cent >20 per cent<6 per cent 1.95 9.55 — 6–20 per cent 2.63 11.01 31.1 >20 per cent — 10.71 22.8We wish to apologise for any inconvenience caused.