Antimetabolites, Antineoplastic/economics; Antineoplastic Combined Chemotherapy Protocols/economics; Colonic Neoplasms/economics; Deoxycytidine/analogs & derivatives; Drug Costs; Fluorouracil/analogs & derivatives; Outcome and Process Assessment, Health Care/economics; Administration, Oral; Antimetabolites, Antineoplastic/administration & dosage; Antineoplastic Combined Chemotherapy Protocols/therapeutic use; Capecitabine; Chemotherapy, Adjuvant; Colonic Neoplasms/drug therapy; Colonic Neoplasms/mortality; Colonic Neoplasms/pathology; Cost Savings; Cost-Benefit Analysis; Deoxycytidine/administration & dosage; Deoxycytidine/economics; Fluorouracil/administration & dosage; Fluorouracil/economics; Health Resources/economics; Health Resources/statistics & numerical data; Health Services Research; Humans; Kaplan-Meier Estimate; Leucovorin/administration & dosage; Leucovorin/economics; Models, Economic; National Health Programs/economics; Neoplasm Staging; Quality-Adjusted Life Years; Survival Rate; Taiwan; Time Factors; Treatment Outcome