Table 3 Distribution of incorrect hospital assigned cause of injury categories by validation cause of injury category, Emergency Department Injury Surveillance System (EDISS), Massachusetts, March 1999–February 2000.
| Validated injury cause* (E codes) | % misclassified | Misclassified cause | Number (%) in misclassified category |
|---|---|---|---|
| Machinery (E919.0–E919.9) | 65 (39/60) | Cut/pierce | 21 (54) |
| Struck by/against | 13 (33) | ||
| Falls | 2 (5) | ||
| Overexertion | 2 (5) | ||
| Missing | 1 (3) | ||
| Not specified (E887, E928.9, E929.9, E958.9, E968.9, E988.9, E976, E997.9) | 54 (51/94) | Cut/pierce | 22 (43) |
| Overexertion | 8 (16) | ||
| Struck by/against | 7 (14) | ||
| Other specified | 5 (10) | ||
| Not elsewhere classified | 4 (8) | ||
| Falls | 3 (6) | ||
| Natural/environmental | 1 (2) | ||
| Missing | 1 (2) | ||
| Not elsewhere classified (E928.8, E929.8, E958.8, E959, E988.8, E989, E977, E995, E997.8, E998, E999 ) | 31 (9/29) | Overexertion | 4 (44) |
| Struck by/against | 3 (33) | ||
| Falls | 1 (11) | ||
| Other specified | 1 (11) | ||
| Other specified (E846–E848, E914–E915, E918, E921.0–E921.9, E923.0–E923.9, E925.0–E926.9, E929.0–E929.5, E955.5, E955.9; E958.0, E958.4, E960.1, E965.5–E965.9, E967.0–E967.9, E968.4, E985.5; E988.0, E988.4, E971, E978, E990–E994, E996, E997.0–E997.2) | 19 (18/95) | Struck by/againstOverexertion | 17 (94)1 (6) |
| Natural/environmental (E900.0–E909, E928.0–E928.2, E958.3, E988.3) | 17 (3/15) | Missing | 3 (100) |
| Falls (E880.0–E886.9, E888, E957.0–E957.9, E968.1, E987.0–E987.9) | 11 (22/201) | Overexertion | 16 (73) |
| Missing | 6 (27) | ||
| Fire/burn (E890.0–E899, E924.0–E924.9, E958.1, E958.2, E958.7, E961, E968.0, E968.3, E988.1, E988.2, E988.7) | 11 (4/37) | MissingPoisoning | 2 (50)1 (25) |
| Natural/environmental | 1 (25) | ||
| Poisoning (E850.0–E869.9, E950.0–E952.9, E962.0–E962.9, E980.0–E982.9, E972) | 9 (1/11) | Missing | 1 (100) |
| Struck by/against (E916–E917.9, E960.0, E968.2, E973, E975) | 9 (17/192) | Falls | 7 (41) |
| Overexertion | 6 (35) | ||
| Cut/pierce | 4 (24) | ||
| Cut/pierce (E920.0–E920.9, E956, E966, E986, E974) | 3 (8/ 250) | Missing | 3 (38) |
| Falls | 2 (25) | ||
| Overexertion | 2 (25) | ||
| Machinery | 1 (13) | ||
| Transportation (E800–E819, E958.5, E958.6, E988.5, E988.6) | 1 (1/74) | Machinery | 1(100) |
| Overexertion (E927) | 1 (1/186) | Missing | 1(100) |
| All causes (E800–E999) | 14 (174/1247) | Cut/pierce | 47 (30) |
| Struck by/against | 40 (25) | ||
| Overexertion | 39 (25) | ||
| Falls | 15 (9) | ||
| Other specified | 6 (4) | ||
| Not elsewhere classified | 4 (3) | ||
| Machinery | 2 (1) | ||
| Natural/environmental | 2 (1) | ||
| Poisoning | 1 (1) |
*Causes of injuries grouped according to the ICD‐9 Framework for Presenting Injury Data.6