Abstract 501 Table 1

Demographic characteristics of the patients in the 3 cohorts and overall. Data is reported as number (n) and percentages (%). Anti-phospholipid (aPL) positivity was based on positivity for any of the isotypes: anti-phosphatidylserine/prothrombin complex (PS/PT) IgG or IgM, anti-cardiolipin (aCL) IgG, IgM, or IgA, and anti-beta2-glycoprotein1 (aB2GP1) IgG, IgM, or IgA.

JH COL BI Total
N 149 150 120 419
Female; n (%) 128 (86%) 137 (91%) 98 (82%) 363 (87%)
Age, years; median (IQR) 48 (36-59) 38 (30-47) 36 (28-49) 41 (31-53)
Younger than < 65 years old atPC4d measurement; n (%) 127 (85%) 139 (93%) 117 (98%) 383 (91%)
Ethnicity; n (%)AfricanAsianCaucasianHispanicOtherNot available 51 (34%)6 (4%)83 (56%)0 (0%)9 (6%)0 (0%) 39 (26%)14 (9%)40 (27%)49 (33%)3 (3%)5 (3%) 37 (31%)15 (13%)52 (43%)0 (0%)3 (3%)13 (11%) 127 (30%)35 (8%)175 (42%)49 (12%)15 (4%)18 (4%)
aPL positivity; n (%)aPS/PT or aCL or aB2GP1aPS/PTaCLaB2GP1 80 (54%)72 (48%)39 (26%)36 (24%) 64 (43%)44 (29%)30 (20%)34 (23%) 42 (35%)35 (29%)15 (12%)14 (12%) 186 (44%)151 (36%)84 (20%)84 (20%)