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. 2021 Mar 1;28(3):293–303. doi: 10.5551/jat.56333

Table 1. Characteristic and clinical information for the 2,655 study subjects.

Cases (N = 689) Controls (N = 1,966) Statistics P
Age, mean ± sd 59.6 ± 5.7 58.5 ± 6.5 t = 4.3 1.78 × 10−5
BMI, mean ± sd 25.9 ± 1.6 25.4 ± 1.7 t = 6.8 1.23 × 10−11
Gender (%)
    Male 295 (43) 840 (43)
    Female 394 (57) 1,126 (57) χ2 = 0 1
Site of Surgery (%)
    hip 396 (57) 1,146 (58)
    knee 293 (43) 820 (42) χ2 = 0.11 0.74
Hypertension (%)
    Yes 205 (30) 555 (28)
    No 484 (70) 1,411 (72) χ2 = 0.51 0.48
Hyperlipemia (%)
    Yes 197 (29) 490 (25)
    No 492 (71) 1,476 (75) χ2 = 3.39 0.07
Diabetes (%)
    Yes 39 (6) 103 (5)
    No 650 (94) 1,863 (95) χ2 = 0.11 0.75
Smoking (%)
    Yes 117 (17) 316 (16)
    No 572 (83) 1,650 (84) χ2 = 0.25 0.62
Location of the thrombosis (%)
    Proximal 586 (85) -
    Distal 85 (12) -
    Both 18 (3) - - -