Table 1.
ICD-9 codes and summary statistics of emergency department visits for respiratory and cardiovascular outcomes. SD indicates standard deviation.
| Outcome | ICD-9 codes [only primary codes used] |
Visits per day | ||
|---|---|---|---|---|
| Minimum | Mean (SD) | Maximum | ||
| Respiratory | ||||
| All respiratory | 460-465, 466.0, 477, 480-486, 491-492, 493, 466.1, 466.11, 466.19, 496, 786.07 | 86 | 286.0 (102.8) | 763 |
| Asthma and wheeze | 493, 786.07 | 13 | 64.7 (25.2) | 191 |
| Chronic obstructive pulmonary disease | 491-492, 496 | 1 | 12.4 (5.2) | 37 |
| Pneumonia | 480-486 | 6 | 35.7 (15.2) | 108 |
| Upper respiratory infection | 460-465, 466.0, 477 | 44 | 162.5 (62.5) | 467 |
| Cardiovascular | ||||
| All cardiovascular | 410-414, 427, 428, 433-437, 440, 443-445, 447 | 20 | 66.9 (18.7) | 129 |
| Ischemic heart disease | 410-414 | 3 | 18.0 (5.4) | 40 |
| Dysrhythmia | 427 | 3 | 17.2 (5.6) | 40 |
| Congestive heart failure | 428 | 1 | 17.6 (7.8) | 51 |
| Ischemic stroke | 433-437 | 0 | 12.8 (5.0) | 34 |