Table 2. Mean ancestry fraction and 95% CIs in controls, adenomas, adenocarcinomas and admixed population (MEX and ASW) included into the analysis.

	Ancestry fraction
	European	Amerindiana	African
Group/population	Mean (95% CI)	Mean (95% CI)	Meanb (95% CI)
Controls (n=238)	0.39 (0.38–0.41)	0.45 (0.43–0.46)	0.11 (0.10–0.12)
Adenoma (n=115)	0.44*** (0.42–0.46)	0.39*** (0.37–0.41)	0.13* (0.11–0.15)
Cancer (n=190)	0.38 (0.37–0.40)	0.43 (0.41–0.45)	0.14** (0.12–0.16)
MEX (n=77)	0.48 (0.45–0.51)	0.48 (0.45–0.51)	0.04 (0.03–0.05)
Ref valuec	0.5	0.45	0.05
ASW (n=83)	0.18 (0.15–0.20)	0.05 (0.04–0.07)	0.77 (0.75–0.79)
Ref valuec	0.2	−	0.8

Abbreviations: ANOVA, analysis of variance; ASW, African ancestry in Southwest USA; CHB, Han Chinese in Beijing, China; CI, confidence interval; MEX, Mexican ancestry from Los Angeles.

P-value for one-way ANOVA test: ***<0.001, **<0.01 and *<0.1*.

^aBased on CHB reference population.

^bBack transformated from log.

^cSeldin et al.²⁷