TABLE 1.

Characteristics of Patients With HIT and Thrombosis Compared With Controls (PICU Patients Without Clinical Evidence of HIT or Thrombosis)

VariableHIT-ThrombosisControls
Number1427
Median age (mo; interquartile range)6.5 (1–33)4.3 (2–19)
Percentage of males64%59%
Heparin exposure before sample taken (d; mean, SD)14 ± 10.515 ± 9.5
Storage time before analysis (mo; mean, SD)17 ± 6.219.5 ± 5.5
Platelet count, mean (range) ×109/L58 (27–191)336 (52–570)
  • SD indicates standard deviation.