Table 3.

Unadjusted and adjusted OR for risk factors for abdominal VT in adults (age ≥ 21) and paediatric patients (age < 21).

Age ≥ 21	Unadjusted OR (95% CI)	Adjusted* OR (95%CI)	Wald p-value
Female sex	1.37 (1.03, 1.81)	1.36 (0.99, 1.86)	0.06
Hispanic	1.89 (0.95, 3.76)	1.65 (0.79, 3.47)	0.18
Age first VTE	0.98 (0.9, 0.99)	0.98 (0.97, 0.99)	<0.0001
BMI	0.96 (0.94, 0.98)	0.96 (0.94, 0.98)	<0.0001
Surgery	1.70 (1.15, 2.51)	1.55 (1.02, 2.37)	0.04
Chronic renal disease	5.79 (2.7, 12.3)	4.04 (1.69, 9.70)	0.002
Chronic liver disease	2.07 (1.2, 3.7)	2.02 (1.09, 3.75)	0.03
Central venous line	2.07 (3.10, 20.3)	4.39 (1.60, 12.11)	0.004
Autoimmune conditions	1.70 (1.21, 2.39)	1.42 (0.98, 2.05)	0.07

Age < 21	Unadjusted OR (95% % CI)	Adjusted* OR (95%CI)	Wald p-value
Hispanic ethnicity	3.02 (1.44, 6.32)	2.30 (0.97, 5.41)	0.06
Age at first VTE	0.91 (0.87, 0.95)	0.92 (0.87, 0.97)	0.003
BMI	0.93 (0.88, 0.98)	0.97 (0.92, 1.03)	0.30
Trauma/Injury	0.15 (0.02, 1.13)	0.17 (0.02, 1.38)	0.10
Autoimmune conditions	2.98 (1.10, 8.90)	4.45 (1.47, 13.51)	0.008
Prothrombin 20210A	3.27 (1.0, 10.7)	2.45 (0.62, 9.67)	0.20
Protein C deficiency	11.70 (2.2, 62.0)	13.4 (2.29, 78.7)	0.004

^*Adjusted for all other listed variables.

BMI, body mass index CI, confidence interval; OR, odds ratio; VTE, venous thromboembolism.