Retrospective analysis of risk factors for left-sided vs right-sided colon cancer in a southern Chinese Han population

Figure 4 Comparison of comorbidities between left-sided colorectal cancer and right-sided colorectal cancer groups. A: Pie charts showing the proportion of diabetes mellitus (DM) in left-sided colorectal cancer (L-CRC; total = 1132) and right-sided colorectal cancer (R-CRC; total = 877) groups; B: Bar plot comparing the number of cases with or without DM between the L-CRC and R-CRC groups. Data were analyzed using a χ² test; C: Pie charts showing the proportion of hepatitis B virus (HBV) infection in L-CRC (total = 1132) and R-CRC (total = 877) groups; D: Bar plot comparing the number of cases with or without HBV infection between the L-CRC and R-CRC groups. Data were analyzed using a χ² test; E: Pie charts showing the proportion of hypertension in L-CRC (total = 1132) and R-CRC (total = 877) groups; F: Bar plot comparing the number of cases with or without hypertension between the L-CRC and R-CRC groups. Data were analyzed using a χ² test. All data are presented as percentages or case numbers. P < 0.001 for all comparisons. L-CRC: Left-sided colorectal cancer; R-CRC: Right-sided colorectal cancer; DM: Diabetes mellitus; HBV: Hepatitis B virus.