Table 2.

Multivariate analyses

		OS			PFS
Parameter	Reference	p value	HR	95% confidence interval	p value	HR	95% confidence interval
T-stage
T3/4	T1/2	0.633	0.8	0.3–2.1	0.454	0.7	0.3–1.8
T2 + 1	T1/2	0.388	0.6	0.2–1.9	0.346	0.6	0.2–1.8
Chemotherapy	No chemotherapy	0.017	0.4	0.2–0.8	0.070	0.5	0.2–1.1
Charlson index	No comorbidities	0.897	1.1	0.5–2.5	0.647	1.2	0.5–2.8
Age		0.060	1.0	1.0–1.1	0.049	1.1	1.0–1.1
BMI
Underweight	Normal weight	0.062	2.5	1.0–6.7	0.004	3.9	1.5–9.8
Overweight		0.426	1.3	0.7–2.5	0.530	1.2	0.6–2.4
Obese		0.978	1.0	0.4–2.2	0.680	1.2	0.5–2.7

¹T2 + was used for tumors stages at least T2 but without further exact T-staging