Table 1. Comparison of chlamydia positivity between international travellers and Australian residents, Melbourne, Australia, 2007–2017 (n = 49,400).

Characteristics	Travellers (n = 28,786)			Residents (n = 20,614)			p value
	Tested positive for chlamydia	Tested for chlamydia	Positivity % (95% CI)	Tested positive for chlamydia	Tested for chlamydia	Positivity % (95% CI)
Males
All males	1,537	12,657	12.1 (11.6–12.7)	1,020	10,913	9.3 (8.8–9.9)	< 0.001
Genital symptoms	667	4,154	16.1 (15.0–17.2)	499	3,957	12.6 (11.6–13.7)	< 0.001
No genital symptoms	870	8,503	10.2 (9.6–10.9%)	521	6,956	7.5 (6.9–8.1)	< 0.001
Reported contact with chlamydia	414	1,537	26.9 (24.8–29.2)	271	1,020	26.6 (24.0–29.4)	0.90
Females
All females	1,681	16,129	10.4 (10.0–10.9)	742	9,701	7.7 (7.1–8.2)	< 0.001
Genital symptoms	704	7,062	10.0 (9.3–10.7)	295	4,348	6.8 (6.1–7.6)	< 0.001
No genital symptoms	1,028	9,234	11.1 (10.5–11.8)	463	5,416	8.6 (7.8–9.3)	< 0.001
Reported contact with chlamydia	317	805	39.4 (36.1–42.8)	162	342	47.4 (42.1–52.7)	0.01

CI: confidence interval.