Table 1 Characteristics of a prospective cohort of 1202 travellers to developing countries who attended a Dutch travel health clinic for pre-travel advice, October 2006 - October 2007
Number of subjects | 1202 | Â |
Male sex | 520 | 43% |
Median age in years° | 38 | 29-51 |
Age groups in years | Â | Â |
   18 - 30 | 394 | 33% |
   31 - 45 | 379 | 32% |
   46 - 80 | 429 | 36% |
Country of birth | Â | Â |
   Netherlands | 1048 | 87% |
   Other Western country | 67 | 6% |
   Non-Western country | 87 | 7% |
Previous travel to a developing country | Â | Â |
   Never | 223 | 19% |
   1 - 5 times | 698 | 58% |
   6 times or more | 281 | 23% |
Previous travel destinations*1 | Â | Â |
   Asia | 664 | 55% |
   Latin America | 543 | 45% |
   Africa | 524 | 44% |
Primary purpose of travel | Â | Â |
   Tourism | 1030 | 86% |
   Work or education | 98 | 8% |
   Visiting friends and/or relatives | 74 | 6% |
Current travel destination (regions) | Â | Â |
   South-Eastern and Eastern Asia | 422 | 35% |
   South-Central and Western Asia | 127 | 11% |
   South America | 202 | 17% |
   Central America and Caribbean | 120 | 10% |
   Southern and Eastern Africa | 184 | 15% |
Eastern Africa | 119 | 10% |
Southern Africa | 45 | 4% |
Both Eastern and Southern Africa | 20 | 2% |
   Middle, Western and Northern Africa | 111 | 9% |
   Several regions*2 | 33 | 3% |
   Several continents*2 | 3 |  |
Median travel duration in days° | 21 | 15-28 |
   < 21 days | 527 | 44% |
   21-34 days | 533 | 44% |
   ≥ 35 days | 142 | 12% |