. Author manuscript; available in PMC: 2014 Feb 1.

Published in final edited form as: Med Decis Making. 2012 Oct 5;33(2):154–162. doi: 10.1177/0272989X12461856

Table 3.

Reclassification Table When New Model Adds Predictive Information

a) Observed Reclassification (cases / non-cases)
Reference Model	Low	New Model		High	Totals
Reference Model	Low	Intermediate Low	Intermediate High	High	Totals
Low	39 / 1651^*	9 / 193	3 / 14	0 / 0	51 / 1858

Intermediate Low	21 / 428	26 / 531	47 / 241	5 / 19	99 / 1219
Intermediate High	1 / 75	28 / 271	72 / 481	51 / 158	152 / 985

High	0 / 2	1 / 29	16 / 134	175 / 279	192 / 444
Totals	61 / 2156	64 / 1024	138 / 870	231 / 456	494 / 4506

b) Expected Reclassification (cases / non-cases)
Reference Model	Low	New Model		High	Totals
Reference Model	Low	Intermediate Low	Intermediate High	High	Totals
Low	39 / 1651^*	15 / 310.5	2 / 44.5	0 / 1	56 / 2007

Intermediate Low	15 / 310.5	26 / 531	37.5 / 256	3 / 24	81.5 / 1121.5
Intermediate High	2 / 44.5	37.5 / 256	72 / 481	33.5 / 146	145 / 927.5

High	0 / 1	3 / 24	33.5 / 146	175 / 279	211.5 / 450
Totals	56 / 2007	81.5 / 1121.5	145 / 927.5	211.5 / 450	494 / 4506

Cells include cases/non-cases

Reclassification from a simulation comparing a reference model based on X (true OR of 8) and a new model based on X and Y (true OR of 3) with a base event probability of 10% and reclassification cut points at 5%, 10% and 20%.