Table 1.

Phenotype data subjects used for GWAS analysis

Gender	Low HbF (≤3.1%)	Intermediate HbF (≥3.2 & <8.6%)	High HbF (≥8.6%)
Female* (128)	47	5	76
Male* (126)	64	5	57
Totals	111	10	133
Mean HbF (%)	1.84	3.95	13.83
HbF Range (%)	0 to 3.1	3.2 to 7	8.6 to 60

GWAS, genome-wide association study; HbF, fetal hemoglobin.

^*All subjects are African American; total number of females and males are shown in parenthesis.