Table 2.

Odds ratio of VTE by quartiles of nitrated fibrinogen

Quartiles	1	2	3	4
Nitrated fibrinogen	<43.5	43.5–54.1	54.1–69.6	369.7
−VTE	50	47	42	39
+VTE	7	9	14	18
Event rate	12.3 %	16.1 %	25.0 %	31.6 %
Unadjusted OR	1	1.37 (0.47–3.97)	2.38 (0.88–6.44)	3.30 (1.25–8.68)†
Adjusted OR (1)	1	1.30 (0.44–3.81)	2.22 (0.81–6.08)	3.25 (1.23–8.64)†
Adjusted OR (2)	1	1.37 (0.47–4.02)	2.42 (0.88–6.62)	2.84 (1.06–7.62)†
Adjusted OR (3)	1	1.26 (0.43–3.71)	2.23 (0.82–6.11)	2.84 (1.06–7.62)†
Adjusted OR (4)	1	1.21 (0.40–3.62)	2.17 (0.78–6.03)	2.55 (0.92–7.01)

Values listed as OR (95 % CI).

Model 1: Adjusted for age.

Model 2: Adjusted for cancer.

Model 3: Adjusted for surgery.

Model 4: Adjusted for age, cancer, surgery.

Odds ratios were compared by Fischer’s exact test.

^†P<0.05