Table 1. Bayesian information criterion (BIC) for tested association models in the genome association analysis.

The model with lowest BIC value was selected.

Model	BIC values
Middle American
Naive*	1467.12
K	1447.61
PC1	1459.16
PC1 & K	1443.60
PC1 & PC2	1461.23
PC1, PC2 & K	1440.48
Andean
Naive*	1177.63
K	1167.78
PC1	1182.46
PC1 & K	1167.68
PC1 & PC2	1187.38
PC1, PC2 & K	1167.67

*Naïve- No kinship (K) or principal component (PC) accounted in the analysis