Figure 2

Survival curves of GBC patients with different marital status (married, divorced/separated, widowed and single). (a) All stages: χ2 = 42.010, P < 0.001; (b) (1) stage I: χ2 = 18.698, P < 0.001; (2) stage II: χ2 = 17.083, P = 0.001; (3) stage III: χ2 = 3.498, P = 0.321; (4) stage IV: χ2 = 38.850, P < 0.001; (5) stage II + III: χ2 = 15.663, P = 0.001; (6) stage III + IV: χ2 = 39.729, P < 0.001.