Hospitalized ulcerative colitis patients have an elevated risk of thromboembolic events

Table 1 Characteristics of non-surgical and surgical groups

	Non-surgical discharges			Surgical discharges
	Ulcerative colitis	Diverticulitis	Acute respiratory failure	Ulcerative colitis	Diverticulitis	Colorectal cancer
N	7302	25 138	50 905	880	6860	20 336
Estimated population totals1	974 206	3 805 999	6 296 383	127 327	944 275	2 910 807
Age (mean)	49.8	67.7	62.3	47.6	62.2	69.6
Male (%)	46	35a	48	54	43	49
Length of stay (mean)	7.1d	6.6d	11.7d	16.9d	13.1d	13.9d
Atrial fibrillation (%)	2.9	4.5a	11.3c	2.3	3.2	5.1e
Obesity (%)	1.3	2.5a	2.2c	1.1	2.3	1.5
History of VTE (%)	0.13	0.01	0.11	0	0.06	0.18
Mortality (%)	1.6	1.6	23.6	2.5	4.0	3.7

VTE: Venous thromboembolism.

¹Calculated by applying probability weight to each observation.

^aP < 0.05, non-surgical discharges with ulcerative colitis vs non-surgical discharges with diverticulitis;

^cP < 0.05, non-surgical discharges with ulcerative colitis vs non-surgical discharges with respiratory failure;

^eP < 0.05, surgical discharges with ulcerative colitis vs surgical discharges with colorectal cancer.