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Table 1 AIS severity changes for AIS98 dictionary codes and VSTR dataset injuries when mapping to AIS08.

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 AIS98 dictionary
codes
VSTR dataset
injuries
Overall chi square
Codes Incidence Injuries Incidence
Same in AIS08 1109* 82.7% 95419 74.4% Χ2 = 188.25; p < 0.001
Increases in AIS08 9 * 0.7% 65 0.1%  
Decreases in AIS08 61 * 4.5% 16318 12.7%  
Multiple mapping options in AIS08 (available options have different severity levels) 9 * 0.7% 2945 2.3%  
No map currently available (no AIS08 map in dictionary map) 153 11.4% 13533 10.5%  
Total 1341 100.0% 128280 100.0%  
  1. * = p < 0.01 on examination of standardised residuals for Χ2 test (|z score| >2.58)