Table 2

SULT1A1 allele and genotype frequencies and adjusted ORs for breast cancer among postmenopausal Iowa women, 1992–1994

SULT1A1 (codon 213)Cases (n = 155)Controls (n = 328)Statistics
Allele frequencies (%)a
Arg 58.465.9
His 41.634.1P = 0.02
Genotype frequencies (%)b
Arg/Arg 35.545.0
Arg/Hi 45.841.3
His/His 18.713.4P = 0.09
Adjusted ORs and 95% CI
Arg/Arg 551481.0 (reference)c
Arg/His 711361.4 (0.9–2.2)
His/His 29441.8 (1.0–3.2)
P for trend, 0.027
  • a Number of alleles/number of chromosomes.

  • b Number of participants with genotype/total number of participants.

  • c Adjusted for age, waist:hip ratio, and number of live births.