Quality assessment (based on NOS), hazard ratio, and standard error of studies included in PSA nadir parameter

For quality assessment a maximum 7 stars could be scored; 6 or 7 stars considered as high quality study, 4 – 5 stars corresponded with intermediate quality, and 0-3 stars showed low quality

本质量评估的满分设定为7星；获评6星或7星的研究被认定为高质量研究，获评4至5星的研究属于中等质量研究，获评0至3星的研究则为低质量研究。