Evidence-Based Complementary and Alternative Medicine

Research Article

Lymphocyte and Platelet Counts, as well as Interleukin-6 Levels, Predict Mortality of Coronavirus Disease 2019 (COVID-19): A Systematic Review and Meta-Analysis

Table 3

Methodological quality of enrolled studies based on the Newcastle–Ottawa Scale (NOS).
StudyIs the definition adequate?Representativeness of the casesSelection of controlsDefinition of controlsComparability of both groupsAscertainment of diagnosisSame ascertainment method for both groupsNonresponse rateTotal scores
Ruan. Q★★★——★★★7
Zhou. F★★★★★★★★★9
Yang. X★★★★★-★★★8
Deng. Y★★★★—★★★7
Wang. L★★★★★-★★★8
Xu. B★★—★★-★★★7
Du. R. H★★★★—★★★7
Xu. J. Q★★★★★-★★★8
Takahisa. M★★★★—★★★7