Table 2.

Predictive factors for immunosuppressive use and need for major inflammatory bowel diseases-related abdominal surgery

	Univariate analysis	Logistic regression
Immunosuppressive use
Early IBD-related hospitalization	P = 0.001, OR = 2.08	P = 0.01, OR = 2.03
	95%CI: 1.33-3.26	95%CI: 1.18-3.49
Perianal disease	P = 0.01, OR = 2.28	P = 0.046, OR = 2.07
	95%CI: 1.21-4.30	95%CI: 1.01-4.22
Age at diagnosis1	P < 0.001	P = 0.002
Location	P = 0.016 for location	NS
Smoking	P = 0.054	P = 0.06
Non-inflammatory behavior	P = 0.06	NS
Arthritis	P = 0.03, OR = 1.76	P < 0.001, OR = 2.96
	95%CI: 1.05-2.98	95%CI: 1.63-5.39
Steroid use (any time)	P < 0.001, OR = 5.78	-
	95%CI: 3.57-9.35
Major IBD-related abdominal surgery
Early IBD-related hospitalization	P < 0.001, OR = 7.24	P < 0.001, OR = 5.80
	95%CI: 4.34-12.1	95%CI: 3.20-10.5
Non-inflammatory behavior	P < 0.001, OR = 5.38	P < 0.001, OR = 2.15
	95%CI: 3.30-8.76	95%CI: 1.56-2.94
Location	P < 0.0012	P = 0.02 for location,
		P = 0.002, OR = 0.33
		95%CI: 0.16-0.67 for colonic location
Smoking	P = 0.17	NS
Perianal disease	P = 0.19	NS
Anaemia at presentation	P < 0.001, OR = 2.79	P < 0.001, OR = 4.39
	95%CI: 1.73-4.51	95%CI: 2.37-8.11

¹According to Montreal classification;

²If all locations were considered. NS: Non-significant.