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Table 1 Demographics of African-American and Caucasian cohorts included in the study

From: Pilot GWAS of caries in African-Americans shows genetic heterogeneity

Race

African American

Caucasian

Cohort

Adults

Children

Adults

Children

N

109

96

918

983

Age; mean (range)

29.15 (18–58)

7.30 (3–11)

33.96 (18–64)

6.37 (3–11)

Male (%)

38 (34.9%)

48 (50.0%)

683 (32.8%)

616 (50.7%)

Female (%)

71 (65.1%)

48 (50.0%)

910 (57.1%)

599 (49.3%)

DMFT/dft; mean (range)

7.17 (0–28)

2.21 (0–12)

10.39 (0–28)

1.96 (0–17)

DMFS/dfs; mean (range)

18.2 (0–106)

4.90 (0–35)

23.00 (0–122)

3.85 (0–53)

PCs

2

2

2

2

Genotyped SNPs

529,015

529,837

526,525

510,212

Imputed SNPs

4,907,119

4,912,366

4,915,678

4,931,991

  1. PCs number of principal components adjust for in the GWAS