. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: Caries Res. 2014;48(4):330–338. doi: 10.1159/000356299

Table 1.

Characteristics of COHRA and IFS samples by caries phenotype.

Phenotype	Sample Characteristic	COHRA	IFS1	IFS2
dfs_SM	Age at exam (yrs)^*	7.31 ± 2.43	5.13 ± 0.40
	Age range	3.0-12.0	2.9-7.6
	Sex ratio (males to females)	1.13	1.00
	Smooth caries prevalence (%)	48.3%	18.7%
	dfs_SM^*	3.00 ± 5.48	0.81 ± 2.60
	Genotyping center	CIDR	CIDR	Broad
	Total sample size	596	397	84
	Samples genotyped	547	397	62
	Samples with imputed data	525	394	NA

dfs_PF	Age at exam (yrs)^*	7.97 ± 2.44	5.13 ± 0.40
	Age range	4.0-14.0	2.9-7.6
	Sex ratio (males to females)	1.10	1.00
	Pit-and-fissure caries prevalence (%)	57.3%	31.2%
	dfs_PF^*	2.51 ± 3.38	1.02 ± 2.05
	Genotyping center	CIDR	CIDR	Broad
	Total sample size	572	397	84
	Samples genotyped	520	397	62
	Samples with imputed data	501	394	NA

mean ± SD