Table 1.

Characteristics of the study population

CharacteristicsCasesControls
N716729
Age, n (%)
    55-59 years237 (33.1%)336 (46.1%)
    60-64 years230 (32.1%)186 (25.5%)
    65-69 years155 (21.7%)136 (18.7%)
    70-74 years94 (13.1%)71 (9.7%)
Female, n (%)215 (30.3%)228 (31.3%)
Ethnic origin, n
    Non-Hispanic Black21 (2.9%)23 (3.2%)
    Non-Hispanic White673 (94.0%)684 (93.8%)
    Others22 (3.1%)22 (3.0%)
Education, n (%)
    <12 years of school68 (9.5%)47 (6.5%)
    12 years of school/high school equivalent170 (23.7%)170 (23.3%)
    Some college258 (36.0%)235 (32.2%)
    College and above220 (30.7%)277 (38.0%)