Table 2

Characteristics of study participants

CharacteristicAll participantsHIT-positive participants
Number of participants, n 526 32 
Age, years (SD) 66.5 (15.4) 68.6 (12.9) 
Sex, M/F 271/256 15/17 
Heparin exposure, n (%) 
 UFH 330 (63) 18 (56) 
 LMWH 81 (15) 3 (9) 
 Both 105 (20) 11 (34) 
 Unclear 10 (2) 
Patient type,*n (%)  
 Cardiovascular surgery 121 (23) 11 (32) 
 Noncardiovascular surgery 121 (23) 7 (20) 
 Medicine 253 (48) 4 (12) 
 Oncology 69 (13) 5 (16) 
 Critical care (ICU/CCU) 269 (51) 5 (16) 
Indication for anticoagulation,*n (%) 
 Treatment of VTE 114 (22) 5 (16) 
 Cardiac valve/vascular surgery 39 (7) 10 (29) 
 Treatment of ischemic heart disease 43 (8) 
 Stroke prevention in context of atrial fibrillation 55 (10) 
 Thromboprophylaxis 276 (52) 17 (53) 
CharacteristicAll participantsHIT-positive participants
Number of participants, n 526 32 
Age, years (SD) 66.5 (15.4) 68.6 (12.9) 
Sex, M/F 271/256 15/17 
Heparin exposure, n (%) 
 UFH 330 (63) 18 (56) 
 LMWH 81 (15) 3 (9) 
 Both 105 (20) 11 (34) 
 Unclear 10 (2) 
Patient type,*n (%)  
 Cardiovascular surgery 121 (23) 11 (32) 
 Noncardiovascular surgery 121 (23) 7 (20) 
 Medicine 253 (48) 4 (12) 
 Oncology 69 (13) 5 (16) 
 Critical care (ICU/CCU) 269 (51) 5 (16) 
Indication for anticoagulation,*n (%) 
 Treatment of VTE 114 (22) 5 (16) 
 Cardiac valve/vascular surgery 39 (7) 10 (29) 
 Treatment of ischemic heart disease 43 (8) 
 Stroke prevention in context of atrial fibrillation 55 (10) 
 Thromboprophylaxis 276 (52) 17 (53) 

CCU, cardiac care unit; ICU, intensive care unit; SD, standard deviation; UFH, unfractionated heparin; VTE, venous thromboembolism.

*

Categories not mutually exclusive.