Table 1.

Subjects in four AA study populations

Study populationNo. subjects
Mean (SD) age (y)
Mean (SD) proportion of European ancestry
CasesControlsCasesControlsCasesControls
JHH55535356.8 (7.40)54.4 (11.9)0.22 (0.18)0.19 (0.14)
Wake596658.1 (8.39)58.0 (8.86)0.21 (0.13)0.21 (0.18)
NC17324660.7 (7.26)54.3 (9.54)0.19 (0.12)0.18 (0.12)
WashU8121365.9 (10.6)71.7 (5.69)0.19 (0.16)0.22 (0.16)
Total86887858.5 (8.25)58.9 (12.2)0.21 (0.17)0.20 (0.14)
  • Abbreviations: Wake, Wake Forest University School of Medicine; NC, North Carolina; WashU, Washington University School of Medicine.