Table 4. Characteristics of study cases in GWAS bronchiolitis populations.

	All		Kuopio, FIN		Tampere, FIN		Gothenburg, SWE
	n	%	n	%	n	%	n	%
All cases	217	100%	64	100%	124	100%	29	100%
RSV positive	121	56%	21	33%	90	73%	10	36%
RSV negative	94	43%	41	64%	34	27%	19	64%
Age <12 months	173	80%	33	52%	124	100%	16	55%
Age >12 months	42	19%	29	45%	0	0%	13	45%
Males	114	53%	36	56%	62	50%	16	55%
Hospitalization rate		100%		100%		100%		100%

GWAS, genome-wide association study; FIN, Finland; SWE, Sweden.