Table 1.- Variants (SNPs) included in the PRS calculation
(Disease/Trait: Idiopathic_pulmonary_fibrosis)
rsID	Risk allele	Effect size
rs35705950	T	1.061
rs2076295	G	0.365
rs62025270	A	0.239
rs28673968	T	0.236
rs117791180	T	0.713
rs191031841	T	0.548
Effect size: LN(OR)

Table 2.- PRS Score distribution among populations and regions
(Disease/Trait: Idiopathic_pulmonary_fibrosis)
	count	mean	sd	se	lower.ci	upper.ci
Pyrenean regions
WEST	168	0.094	0.054	0.004	0.086	0.103
SOUTH	83	0.082	0.048	0.005	0.071	0.092
EAST	146	0.091	0.048	0.004	0.083	0.099
Populations
IBS	107	0.086	0.045	0.004	0.077	0.095
PIR	397	0.090	0.051	0.003	0.085	0.096

Table 3.- Pairwise t-test for PRS score among populations and regions
(Disease/Trait: Idiopathic_pulmonary_fibrosis)
group1	group2	n1	n2	p	p.signif	p.adj	p.adj.signif
IBS	PIR	107	397	0.4150	ns	1.000	ns
IBS	WEST	107	168	0.1850	ns	1.000	ns
IBS	SOUTH	107	83	0.5700	ns	1.000	ns
IBS	EAST	107	146	0.4320	ns	1.000	ns
WEST	SOUTH	168	83	0.0658	ns	0.658	ns
WEST	EAST	168	146	0.5710	ns	1.000	ns
SOUTH	EAST	83	146	0.1830	ns	1.000	ns
* p < .05, ** p < .01, *** p < .001

Table 4.- Chi-square test comparison of percentile counts on Pyrenean regions compared to Iberian peninsula population
(Disease/Trait: Idiopathic_pulmonary_fibrosis)
Percentile rank	PIR				WEST				SOUTH				EAST
	adj.std.val	p.value	sig.val		adj.std.val	p.value	sig.val		adj.std.val	p.value	sig.val		adj.std.val	p.value	sig.val
pct95	0.320	0.749	.	white	0.810	0.418	.	white	0.320	0.749	.	white	0.800	0.424	.	white
pct75.95	−0.770	0.441	.	white	1.000	0.317	.	white	−0.770	0.441	.	white	0.630	0.529	.	white
pct50.75	−0.800	0.424	.	white	−1.490	0.136	.	white	−0.800	0.424	.	white	−0.360	0.719	.	white
pct25.50	0.310	0.757	.	white	0.200	0.841	.	white	0.310	0.757	.	white	−1.090	0.276	.	white
pct25	0.990	0.322	.	white	−0.060	0.952	.	white	0.990	0.322	.	white	0.410	0.682	.	white
adj.std.val: Adjusted standardized residuals value; p.value: P value; sig.val: statistical significance, * p < .05, ** p < .01, *** p < .001; red dash to bottom: lower counts than reference; green dash to up: upper counts than reference