Table 2 Proportion and odds ratio of diarrhoea or fever among all illness types according to travel style and duration of travel
From: Travellers returning ill from the tropics – a descriptive retrospective study
Diarrhoea | Fever | |||
|---|---|---|---|---|
Total | 200 (56 %) | Odds ratio compared to tourists | 124 (34 %) | Odds ratio compared to tourists |
Travel style | ||||
Tourism (n = 210, 58 %) | 109 (52 %) | 1 | 61 (29 %) | 1 |
Close contact to locals (n = 30, 8 %) | 22 (73 %) | 2.5 (95 % CI 1.1-6.0; p = 0.03) | 15 (50 %) | 2.4 (95 % CI 1.1-5.3; p = 0.02) |
Work or study (n = 39, 11 %) | 26 (67 %) | 1.9 (95 % CI 0.9-3.8; p = 0.09) | 18 (46 %) | 2.1 (95 % CI 1.0-4.1; p = 0.04) |
VFR (n = 31, 9 %) | 12 (39 %) | 0.6 (95 % CI 0.3-1.3; p = 0.17) | 12 (39 %) | 1.5 (95 % CI 0.7-3.4; p = 0.28) |
Unknown (n = 50, 14 %) | 31 (62 %) | 1.5 (95 % CI 0.8-2.8; p = 0.20) | 18 (36 %) | 1.4 (95 % CI 0.7-2.6; p = 0.34) |
Duration of travel (in days) | Odds ratio compared to ≤ 14 days | Odds ratio compared to ≤ 14 days | ||
≤14 (n = 67, 19 %) | 31 (46 %) | 1 | 17 (25 %) | 1 |
15 - 30 (n = 107, 30 %) | 53 (50 %) | 1.1 (95 % CI 0.6-2.1; p = 0.67) | 29 (27 %) | 1.1 (95 % CI 0.6-2.2; p = 0.81) |
31 – 60 (n = 60, 17 %) | 33 (55 %) | 1.4 (95 % CI 0.7-2.9; p = 0.32) | 26 (43 %) | 2.3 (95 % CI 1.1-4.8; p = 0.03) |
61 - 90 (n = 24, 6 %) | 15 (63 %) | 1.9 (95 % CI 0.7-5.0; p = 0.17) | 13 (54 %) | 3.5 (95 % CI 1.3-9.2; p = 0.01) |
91 - 364 (n = 65, 18 %) | 46 (71 %) | 2.8 (95 % CI 1.4-5.8; p < 0.01) | 28 (43 %) | 2.2 (95 % CI 1.1-4.7; p = 0.03) |
≥365 (n = 13, 4 %) | 10 (77 %) | 3.9 (95 % CI 1.0-15.3; p = 0.04) | 6 (46 %) | 2.5 (95 % CI 0.7-8.6; p = 0.121) |
Unknown (n = 24, 6 %) | 12 (50 %) | 5 (21 %) | ||