Fig. 1: Kaplan–Meier survival estimates of colorectal cancer-specific and overall survival in different circulating 25-OHD groups.

Survival estimates of colorectal cancer-specific survival a in SOCCS and c in UKBB, and overall survival b in SOCCS and d in UKBB, within different circulating 25-OHD groups. (Group 1: 25-OHD < 25 nmol/L, Group 2: 25-OHD = 25–50 nmol/L, Group 3: 25-OHD > 50 nmol/L). The HR and the corresponding P value were estimated in Model 1 by comparing the colorectal cancer-specific survival or overall survival difference between patients in Group 2/3 and in Group 1.