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Table 1 Selected characteristics of breast cancer patients and controls

From: SULT1A1 genotype, active and passive smoking, and breast cancer risk by age 50 years in a German case–control study

Characteristic Cases (n = 419) Controls (n = 884)
Mean age (years) 42.9 42.7
Mean body mass index 23.9 24.3
First-degree family history of breast cancer 62 (14.8%) 53 (6.0%)
Menopausal status   
Premenopausal 325 (77.6%) 718 (81.2%)
Postmenopausal 25 (6.0%) 49 (5.5%)
Unknown 69 (16.5%) 117 (13.2%)
SULT1A1 genotype   
*1/*1 198 (47.3%) 374 (42.3%)
*1/*2 169 (40.3%) 403 (45.6%)
*2/*2 52 (12.4%) 107 (12.1%)
NAT2 genotypea   
Fast acetylator 177 (42.2%) 351 (39.7%)
Slow acetylator 242 (57.8%) 533 (60.3%)
  1. a NAT2 fast acetylators are carriers of at least one *4 (wild-type) allele, based on detection of known genetic polymorphisms at nucleotide positions 481, 590, 803 and 857; slow acetylators are carriers of two variant alleles [3].