In addition, the association probabilities between GP5 and FACT-NTX13 items on numbness and tingling in hands and feet were higher than they were for the overall FACT-NTX13 score, indicating that peripheral neuropathy associated with oxaliplatin was more bothersome than other side effects asked about by the FACT-NTX13 (e.g., discomfort in hands and feet, joint pain). Here, GP5 is linked to peripheral neuropathy.