Table 1.

Inclusion criteria for studies on the prognosis of osteo-sarcoma based on lncRNA expression levels

Inclusion items	Selection criteria
Tumor type	Osteosarcoma
Sample type	Tumor tissue or blood
Assay method	qRT-PCR or FISH
Time of study	January 2003 to September 2017
Follow-up (months)	≥60
Included results	Multivariate analysis of OS and Kaplan–Meier survival curves

Abbreviations: FISH, fluorescence in situ hybridization; lncRNA, long noncoding RNA; OS, overall survival; qRT-PCR, quantitative reverse transcriptase polymerase chain reaction.