Additional file 1 of The value of lncRNAs as prognostic biomarkers on clinical outcomes in osteosarcoma: a meta-analysis

Additional file 1 Study quality and bias in the retrospective cohort studies judged by the Newcastle-Ottawa Scale (NOS) checklist. Figure A.1 Quality assessment of all included studies. “Risk of bias summary” of all included studies. Figure A.2 Quality assessment of all included studies. “Risk of bias graph” of all included studies.

附加文件1：基于纽卡斯尔-渥太华量表（Newcastle-Ottawa Scale, NOS）清单评估的回顾性队列研究的研究质量与偏倚情况。
图A.1 所有纳入研究的质量评估：所有纳入研究的偏倚风险汇总图。
图A.2 所有纳入研究的质量评估：所有纳入研究的偏倚风险图谱。