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Table 2 Frequency Distribution of MMRI-R Scores and Mortality by 5-point Intervals - Development data for 6 month mortality

From: The MDS Mortality Risk Index: The evolution of a method for predicting 6-month mortality in nursing home residents

MMRI-R Risk Group Sample Size Percent of Sample Number of Deaths Percent Died
Overall 43311 100 10025 23
0-5 627 1.4 25 4
6-10 2986 6.9 120 4
11-15 5271 12.2 387 7
16-20 7706 17.8 881 11
21-25 8812 20.3 1530 17
26-30 7173 16.6 1925 27
31-35 4703 10.9 1710 36
36-40 2903 6.7 1377 47
41-45 1628 3.8 939 58
46-50 832 1.9 570 69
51-55 382 0.9 302 79
56-60 177 0.4 158 89
61-65 78 0.2 70 90
66-70 28 0.1 26 93
71-75* 5 0.0 5 100
  1. * In our validation dataset the highest score is 75 however theoretically the score could be up to 85 which occurred in the development dataset. Given that all residents scoring over 70 died in the subsequent 6-months we would anticipate that scores 76 to 85 would also indicate an extremely high likelihood of death.