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Table 4 AIS severity changes in AIS08 for rarely assigned and frequently assigned AIS98 codes in VSTR.

From: Assessment of the effects and limitations of the 1998 to 2008 Abbreviated Injury Scale map using a large population-based dataset

AIS injury severity

All AIS98 codes

Rarely assigned codes

Frequently assigned codes

Codes

% of code type

Codes

% of code type

Same in AIS08

1109

581

85.6%

31

72.1%

Increases in AIS08

9

6

0.9%

0

0.0%

Decreases in AIS08

61

17

2.5%

7

16.3%

Has multiple severity levels in AIS08

9

1

0.1%

2

4.7%

No map currently available

153

74

10.9%

3

7.0%

Total

1341

679

100.0%

43

100.0%