Fig. 1

Flowchart showing study criteria for patients diagnosed with first-time synchronous metastatic colorectal cancer in 2009–2016. *Within predefined time window: 90 days before diagnosis to 270 days after diagnosis. Abbreviations: CRC=colorectal cancer, IPR=In-Patient Register,OPR=Out-Patient Register, SCR=Swedish Cancer Register, SCRCR=Swedish Colorectal Cancer Register