Table 2. Distribution of bacterial pathogen in first-time urine samples from migrants and non-migrants from 2000 to 2015 grouped according to migrant status.

	Non-migrants			All migrants				Refugees				Family-reunited migrants
Urine isolate	No./total	%	OR (95% CI)	No./total	%	OR (95% CI)	P value	No./total	%	OR (95% CI)	P value	No./total	%	OR (95% CI)	P value
Gram-positive	6715/11 737	57.2	1.00 (ref)	1692/2824	59.9	1.25 (1.14–1.38)	<0.001	562/951	59.1	1.36 (1.18–1.56)	<0.001	1130/1873	60.3	1.20 (1.07–1.34)	0.002
Gram-negative	5867/11 737	50.0	1.00 (ref)	1334/2824	47.2	0.80 (0.73–0.88)	<0.001	482/951	50.7	0.81 (0.70–0.93)	0.003	852/1873	45.5	0.80 (0.71–0.89)	<0.001
E. coli	4686/11 737	39.9	1.00 (ref)	1032/2824	36.5	0.78 (0.71–0.86)	<0.001	354/951	37.2	0.77 (0.67–0.89)	<0.001	678/1873	36.2	0.78 (0.70–0.88)	<0.001
Klebsiella spp.	413/11 737	3.5	1.00 (ref)	114/2824	4.0	1.21 (0.96–1.53)	0.109	45/951	4.7	1.09 (0.78–1.51)	0.629	69/1873	3.7	1.36 (1.01–1.82)	0.041
Enterobacterales other than E. coli and Klebsiella spp.	420/11 737	3.6	1.00 (ref)	93/2824	3.3	0.92 (0.71–1.18)	0.490	48/951	5.0	1.08 (0.78–1.48)	0.659	45/1873	2.4	0.79 (0.55–1.13)	0.192
Pseudomonas spp.	143/11737	1.2	1.00 (ref)	29/2824	1.0	1.01 (0.65–1.55)	0.980	15/951	1.6	1.05 (0.60–1.84)	0.864	14/1873	0.7	0.96 (0.52–1.76)	0.886
Other Gram-negative bacteria	434/11737	3.7	1.00 (ref)	119/2824	4.2	1.15 (0.92–1.44)	0.230	51/951	5.4	1.35 (0.99–1.83)	0.059	68/1873	3.6	1.00 (0.75–1.34)	0.988
Other	461/11 737	3.9	1.00 (ref)	129/2824	4.6	1.15 (0.92–1.43)	0.214	37/951	3.9	1.01 (0.71–1.44)	0.949	92/1873	4.9	1.24 (0.96–1.60)	0.106

OR adjusted for test year, Charlson Index, income, sex and age at test.

Total; Total number of urine samples. Total number of isolates exceed total number of urine samples as multiple isolates can be identified in one sample.