Table 3.

Associations between gastro-intestinal symptoms and receipt of medical advice prior to the trip, purpose of travel, duration of travel and type of accommodation.

Gastro-intestinal symptoms (n = 300)†	Receipt of medical advice prior to trip			Purpose of travel			Duration of travel/stay			Type of accommodation
	Odd's ratio (95% CI)	Chi-square value	p value*	Odd's ratio (95% CI)	Chi-square value	p value*	Odd's ratio (95% CI)	Chi-square value	p value*	Odd's ratio (95% CI)	Chi-square value	p value*
Occurrence of diarrhea
No	Ref	14.53	0.00	Ref	3.88	0.04	Ref	7.56	0.00	Ref	7.72	0.00
Yes	0.4 (0.25–0.64)			1.59 (1.00–2.53)			1.93 (1.2–3.1)			1.93 (1.21–3.10)
Nausea and vomiting
Less frequent	Ref	3.58	0.00	Ref	0.19	0.66	Ref	1.47	0.23	Ref	1.02	0.31
More frequent	0.41 (0.15–1.08)			0.81 (0.32–2.03)			1.74 (0.7–4.3)			1.59 (0.64–3.95)
Loss of appetite
Less frequent	Ref	5.81	0.01	Ref	0.00	0.96	Ref	1.44	0.22	Ref	0.44	0.50
More frequent	0.36 (0.16–0.85)			1.01 (0.45–2.27)			0.94 (0.4–1.9)			0.75 (0.32–1.73)
Abdominal pain
Less frequent	Ref	12.56	0.00	Ref	0.80	0.30	Ref	0.26	0.87	Ref	1.06	0.30
More frequent	0.26 (0.12–0.57)			1.37 (0.68–2.77)			1.63 (0.7–3.6)			1.44 (0.71–2.9)

^†Detailed distribution is given in Supplementary Tables C (I–IV).

^*Significance level <0.05.