Table 4.

Definitions of colostomy‐free and progression‐free survival

Author (year) [Ref.]	Definition
	Colostomy‐free survival
James et al. (2013) 8	All pretreatment colostomies not reversed within 8 months after starting treatment or any colostomies after treatment
Peiffert et al. (2012) 9	Colostomy for progression, relapse or complication; reversed colostomies excluded
Yeung et al. (2014) 35	Colostomy including diverting colostomy and colostomy from salvage APR
Meulendijks et al. (2014) 26	Colostomy, excluding colostomies reversed during follow‐up
Franco et al. (2015) 28	Submission to definitive colostomy excluding preventative colostomies
El‐Hadaad et al. (2015) 23	First colostomy
Kichenadasse et al. (2007) 57	Sphincter not intact at last follow‐up
	Progression‐free survival
Lee et al. (2007) 59	First documented relapse in patients who attained complete response
Vordermark et al. (2002) 60	Histological evidence of tumour recurrence or death
Milano et al. (2005) 61	Persistent disease after treatment, local failure or distant failure
Koerber et al. (2014) 25	Progressive disease or death
James et al. (2013) 8	Progressive disease, local recurrence, metastases or death from any cause
Matzinger et al. (2009) 24	Relapse or death of any cause

APR, abdominoperineal resection.