Table 2.

HRs with 95% CIs of any first occurring CVD diagnosis in colectomy and surgical control patients as well as for surgical subgroups

	Number with diagnosis/total	HR (95% CI)	p Value
Patients with colectomy	394/1530
Control patients*	6564/22 950	0.94 (0.85 to 1.04)	0.22
Surgical subgroups
Orthopaedic surgery	2148/7650	0.97 (0.87 to 1.07)	0.51
Surgery in the GI tract leaving it intact	2223/7650	0.92 (0.82 to 1.02)	0.11
Other major surgery not in the GI tract	2193/7650	0.93 (0.84 to 1.04)	0.20

*Age and sex matched, but otherwise randomly selected control patients; five for each surgical comparison group of orthopaedic surgery, surgery in the GI tract, and other major surgery not in the GI tract.

Results are adjusted for age and sex.

CVD, cardiovascular and cerebrovascular; GI, gastrointestinal.