Table 2.

Reporting survival analyses in the included studies

Study	Sample size estimation	Event/total	Censoring	Survival curve	Shape of KM-curve	Significance	Regression model	Variable selection	Goodness of fit or PH assumption test
Attal [9]	Yes	86/135 (relapse)	NR	KM method, log-rank test	Crossing, overlapping	S	Cox-PH model	Informal	NR
Bernasconi [10]	NR	NR	NR	KM method, log-rank test	Crossing	NS	N/A	N/A	NR
Cornelissen [11]	NR	102/257 (death), 113/257 (relapse)	Yes	KM method, log-rank test	Crossing	NS	Cox-PH model, interaction, competing risk	Informal	NR
De Witte [12]	NR	32/66 (death)	NR	KM method, log-rank test, Wilcoxon test	Crossing, overlapping	S	N/A	N/A	NR
Fielding [13]	NR	116/165 (death)	NR	KM method, log-rank test	Crossing	NS	N/A	N/A	NR
Goldstone [14]	NR	531/1031 (death)	Yes	KM method, log-rank test	Crossing, overlapping	NS	Cox-PH model	N/A	NR
Hunault [15]	Yes	67/147 (death)	NR	KM method, log-rank test	Crossing	S	Cox-PH model	Informal	NR
Ifrah [16]	Yes	37/50 (relapse)	NR	KM method, log-rank test	Curves were plotted in two different graphs	N/A	Cox-PH model	Informal	NR
Labar [17]	NR	245/340 (death), 131/340 (relapse)	Yes	KM method, log-rank test	Crossing, overlapping	NS	Cox-PH model	Informal	NR
Ribera [18]	Yes	144/182 (death), 88/182 (relapse)	Yes	KM method, log-rank test	Crossing	NS	Cox-PH model	Informal	NR
Sebban [19]	NR	146/255 (death)	NR	KM method, log-rank test	Crossing	NS	N/A	N/A	NR
Thomas [21]	NR	177/259 (relapse)	NR	KM method, log-rank test	Unevenly separate	S	Cox-PH model	Informal	NR
Takeuchi [20]	NR	83/142 (death)	Yes	KM method, log-rank test	Crossing, overlapping	NS	Cox-PH model	Informal	NR
Ueda [22]	NR	38/57 (death)	Yes	KM method, log-rank test, Wilcoxon test	Evenly separate	S	Cox-PH model	Informal	NR

Abbreviation: PH proportional hazard, NR not reported, N/A not applicable; S, statistical significance; NS, non-statistical significance