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

Table 5 Data source used to assess primary outcomes

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

ISSN: 1471-2407