Table 2.

Median survival in months (95% CI) for patients with different stages of disease by metformin use

	All Patients (n=302)	Metformin (n=117)	Nonmetformin (n=185)	P value
All patients	12.8 (11.0–14.7)	15.2 (12.6–17.8)	11.1 (8.9–13.3)	0.009
Stage
Resectable	28.2 (19.7–36.8)	31.0 (15.2–46.8)	21.4 (14.4–28.3)	0.293
Unresectable	13.8 (11.2–16.5)	15.5 (13.4–17.7)	11.0 (8.7–13.3)	0.001
Metastatic	8.3 (6.9–9.7)	8.8 (7.0–10.6)	7.3 (5.5–9.1)	0.482
Nonmetastatic*	16.6 (14.3–18.9)	20.8 (15.7–26.0)	14.8 (12.5–17.2)	0.005

^*Combined group of patients with resectable and unresectable disease.