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Table 5 Data source used to assess primary outcomes

From: The Norwegian dietary guidelines and colorectal cancer survival (CRC-NORDIET) study: a food-based multicentre randomized controlled trial

Outcome Instrument 5 years after baseline 10 years after baseline 15 years
after baseline
DFS Colorectal Cancer Registry of Norway, Cancer Registry of Norway, Cause of Death Registry in Norway, Norwegian Patient Registry, Norwegian Prescription Database X X X
OS Cause of Death Registry in Norway X X X
  1. DFS disease-free survival, OS overall survival