Table 4.

Risk of future UC-related complications based on BMI at diagnosis

	Categorical Variable		Continuous Variable
	Hazard Ratio	p	Hazard Ratio	p
Surgery		0.33 [overall]1
Underweight	0.00	0.982	1.04 [0.99–1.08]	0.09
Overweight	1.53 [0.90–2.62]	0.12
Obese	1.67 [0.90–1.08]	0.11
Hospitalisation		0.11 [overall]1
Underweight	1.42 [0.44–4.57]	0.562	1.05 [1.01–1.08]	0.008
Overweight	1.41 [0.95–2.10]	0.09
Obese	1.72 [1.10–2.71]	0.02
Steroid use		0.10 [overall]1
Underweight	2.22 [1.03–4.81]	0.04 2	1.03 [1.00–1.05]	0.05
Overweight	1.24 [0.91–1.69]	0.17
Obese	1.37 [0.96–1.96]	0.08

BMI categories: Underweight [BMI < 18.5]; overweight [BMI 25–29.99]; obese [BMI≥30]

Bold: Indicates significant p value [≤0.05]

^aoverall p value reflects any differences between the three ‘abnormal’ BMI categories [underweight, overweight, obese]

^bindividual p values evaluate differences between each specific BMI category and normal weight [BMI 18.5–24.99]

¹univariate Cox-model.