Table 1.

Estimates of demographic parameters

Demographic parameters	MCMC	ABC	ABC_rec
Time split (t)	193 (15–5291)	3300 (250–26010)	3377 (250–25956)
N Ancestral (NA)	5475 (3766–7702)	3829 (741–25863)	4220 (821–29290)
N Shimaa (N2)	681a	6449 (5–34640)	10641a
sb	0.96 (0.17–0.99)	0.89 (0.21–0.99)	-c

Population size in number of individuals and time split in years. The estimates are the mode of the posterior distribution with the 90% HPD (Highest Posterior Density) interval between parentheses. MCMC estimates are the averages over six runs.

^aWe did not specified the 90% HPD for these estimates, because the right end of the posterior distribution did not approach zero in the vertical axis before the upper boundary of the prior distribution. This implies that the 90% HPD depends on the definition of the prior distribution.

^bFraction of the ancestral population that founded the Quechua population.

^cThis parameter did not yield an informative density.