Table II.
Clinical characteristics of cases and controls
| Cases |
Controls |
||||
|---|---|---|---|---|---|
| n | % | n | % | P | |
| Reported breathing trouble | |||||
| Continuous or repeated | 32/54 | (59.3) | 123/157 | (78.3) | .007 |
| Only with colds or rarely | 22/54 | (40.7) | 34/157 | (21.7) | |
| Exercise-induced wheezing | 34/52 | (65.4) | 121/152 | (77.6) | .038 |
| Emergency department visit history | |||||
| No emergency department visits previous year | 5/55 | (9.1) | 63/156 | (40.4) | |
| 1-3 Emergency department visits previous year | 25/55 | (43.6) | 59/156 | (37.8) | <.001 |
| >3 Emergency department visits previous year | 26/55 | (47.3) | 34/156 | (21.8) | |
| Currently has cold | 22/54 | (40.7) | 26/150 | (17.3) | <.001 |
| Parental history of asthma | 25/54 | (46.3) | 71/157 | (45.2) | NS |
| Wakes at night | 34/57 | (59.6) | 112/157 | (71.3) | NS |
| Activity limited | 21/57 | (36.8) | 98/157 | (62.4) | <.001 |
| Time lost from school | 28/57 | (49.1) | 87/157 | (55.4) | NS |
| Asthma reported well-controlled | 38/57 | (66.7) | 115/155 | (74.2) | NS |