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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.