Table 1 Characteristics of travellers to Southeast Asia (n = 876)
Travellers’ characteristics |  | IQR |
|---|---|---|
Age (median) | 32 | 18 (27–45) |
Travellers’ characteristics | n | % |
|---|---|---|
Sex | ||
 Male | 414 | 47.3 |
 Female | 462 | 52.7 |
Education | ||
 Tertiary degree | 515 | 58.8 |
 Upper secondary degree | 212 | 24.2 |
 Lower secondary degree | 133 | 15.2 |
 Primary | 16 | 1.8 |
Pre-existing illness | ||
 Any | 128 | 14.6 |
  Thyroid disease | 22 | 2.5 |
  Chronic respiratory diseases | 18 | 2.1 |
  Allergies | 13 | 1.5 |
  Hypertension | 11 | 1.3 |
  Neurologic disorders | 11 | 1.3 |
  Cardiac diseases | 8 | 0.9 |
  Diabetes mellitus | 5 | 0.6 |
  Other | 61 | 6.9 |
Medication | ||
 Any | 260 | 26.3 |
  Other | 95 | 10.8 |
  Contraceptive | 75 | 8.6 |
  Thyroid medication | 43 | 4.9 |
  Antihypertensives | 25 | 2.8 |
  Antiplatelet drugs | 12 | 1.4 |
  Drugs for respiratory diseases | 10 | 1.1 |