Body mass index does not affect the survival of pancreatic cancer patients

Table 2 Pancreatic cancer survival by usual adult body mass index category

Stage group	BMI category	n	Median overall survival, mo (95%CI)	HR	95%CI	P value	Ptrend value
Overall	< 18.5	98	8.0 (5.8-11.3)	1.12	0.83-1.52	0.45
	18.5-22.9	588	9.7 (8.7-11.1)	1.00	Ref.	Ref.
	23-27.4	791	9.5 (8.6-10.5)	0.99	0.87-1.14	0.92
	≥ 27.5	306	9.8 (7.6-11.2)	1.05	0.88-1.25	0.61	0.90
Resectable	< 18.5	15	11.1 (3.3-19.3)	1.92	0.74-5.01	0.18
	18.5-22.9	73	15.6 (10.1-21.3)	1.00	Ref.	Ref.
	23-27.4	93	16.7 (11.9-27.4)	0.92	0.59-1.44	0.71
	≥ 27.5	36	16.2 (4.5-23.7)	1.13	0.61-2.08	0.70	0.99
Unresectable locally advanced	< 18.5	17	7.0 (3.4-26.1)	0.83	0.38-1.84	0.65
	18.5-22.9	108	8.7 (7.3-11.7)	1.00	Ref.	Ref.
	23-27.4	143	8.6 (6.8-11.5)	1.03	0.73-1.45	0.86
	≥ 27.5	48	8.6 (4.9-15.6)	0.95	0.59-1.54	0.84	0.90
Metastatic	< 18.5	66	4.9 (2.8-8.0)	1.07	0.76-1.51	0.70
	18.5-22.9	407	5.5 (4.0-6.4)	1.00	Ref.	Ref.
	23-27.4	555	5.7 (3.7-6.8)	0.99	0.84-1.16	0.89
	≥ 27.5	222	5.6 (3.3-7.7)	1.02	0.84-1.27	0.76	0.88

BMI: Body mass index.