Determination of an event was based on tumor assessments and survival follow-up assessments. A disease-free survival (DFS) event was defined as any recurrence of the original colon cancer or appearance of a new colon or rectal cancer (proven by cytology or histology, when possible) or death due to any cause, whichever was earliest. Participants who had not had any such event at the time of data analysis were censored at the last date they were known to be event-free. Participants with no tumor assessments after baseline were censored at Day 1. An isolated event of increased CEA, or unexplained clinical deterioration were not considered to be evidence of relapse without support of other objective measurements. The date of relapse was defined as the date of the definitive assessment by objective measurements.

Intent-to-Treat Population

A relapse-free survival (RFS) event included recurrence of the original colon cancer, development of a new colon or rectal cancer, and deaths related to any of the following: treatment, recurrence of the original colon cancer, or development of a new colon or rectal cancer. Participants who had not had any such event at the time of data analysis were censored at the last date they were known to be event-free. Participants whose cause of death was unrelated to treatment or disease recurrence were censored at the time of the last tumor assessment.

Intent-to-Treat (ITT) Population: all randomized participants who gave written informed consent. Participants in the ITT population were analyzed according to the treatment arm to which they were randomized.

Determination of an event was based on tumor assessments and survival follow-up assessments. A disease-free survival (DFS) event was defined as any recurrence of the original colon cancer or appearance of a new colon or rectal cancer (proven by cytology or histology, when possible) or death due to any cause, whichever was earliest. Participants who had not had any such event at the time of data analysis were censored at the last date they were known to be event-free. Participants with no tumor assessments after baseline were censored at Day 1. An isolated event of increased CEA, or unexplained clinical deterioration were not considered to be evidence of relapse without support of other objective measurements. The date of relapse was defined as the date of the definitive assessment by objective measurements. The median was estimated by the Kaplan-Meier method. The full range values include censored observations.

Intent-to-Treat (ITT) Population: all randomized participants who gave written informed consent. Participants in the ITT population were analyzed according to the treatment arm to which they were randomized.

A relapse-free survival (RFS) event included recurrence of the original colon cancer, development of a new colon or rectal cancer, and deaths related to any of the following: treatment, recurrence of the original colon cancer, or development of a new colon or rectal cancer. Participants who had not had any such event at the time of data analysis were censored at the last date they were known to be event-free. Participants whose cause of death was unrelated to treatment or disease recurrence were censored at the time of the last tumor assessment. The median was estimated by the Kaplan-Meier method. The full range values include censored observations.

Intent-to-Treat (ITT) Population: all randomized participants who gave written informed consent. Participants in the ITT population were analyzed according to the treatment arm to which they were randomized.

Overall survival was measured as the time from randomization to the date of death, irrespective of the cause of death. Participants who were not reported as having died at the time of the analysis were censored using the date they were last known to be alive.

Intent-to-Treat (ITT) Population: all randomized participants who gave written informed consent. Participants in the ITT population were analyzed according to the treatment arm to which they were randomized.

Overall survival was measured as the time from randomization to the date of death, irrespective of the cause of death. Participants who were not reported as having died at the time of the analysis were censored using the date they were last known to be alive. The median was estimated by the Kaplan-Meier method. The full range values include censored observations.

Intent-to-Treat (ITT) Population: all randomized participants who gave written informed consent. Participants in the ITT population were analyzed according to the treatment arm to which they were randomized.

The intensity of all adverse events (AEs) was categorized according to the National Cancer Institute Common Toxicity Criteria for Adverse Events (NCI CTCAE) (version 3.0) grading system. If an AE had occurred which was not contained in the NCI-CTC, a four-point scale (mild, moderate, severe, life-threatening) was used. The terms "severe" and "serious" are not synonymous and are independently assessed for each AE. Only the most severe intensity was counted for multiple occurrences of an AE in one individual. See the AEs results table for details.

Safety Population: all participants who were randomized and did receive at least one dose of capecitabine, 5-FU, or oxaliplatin. Participants in the safety population were analyzed according to the study treatment they received.