Table 1 General characteristics of the study subjects
From: Impact of meteorological variation on hospital visits of patients with tree pollen allergy
| Total | Patients with tree pollen allergy | Patients without tree pollen allergy | |
|---|---|---|---|
| N | 4,715 | 965 | 3,750 |
| Age (years) | |||
| Mean | 38.4 | 35.4 | 39.1 |
| SD | 13.4 | 11.7 | 13.7 |
| Sex, men | |||
| n | 2,206 | 520 | 1,686 |
| % | 46.8 | 53.9 | 45.0 |