Multipoint LOD scores on chromosome 9 for apolipoprotein A-I. Results for combined and stratified analyses shown. Model 1 was adjusted for age, sex, and field center (combined analysis). Model 2 was additionally adjusted for waist circumference, current smoking status, current alcohol consumption, current estrogen use, lipid treatment status, impaired fasting glucose and diabetes status. AZ, Arizona field center; DA, Dakotas field centers; OK, Oklahoma field center; cM, Haldane centimorgans.