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Table 2 The quality assessment according to Newcastle-Ottawa scale

From: The prognostic impact of neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio on patients with small cell lung cancer receiving first-line platinum-based chemotherapy: a systematic review and meta-analysis

Study

Selection

Comparability

Outcome

Total score

Representativ-eness of the exposed cohort

Selection of the non -exposed cohort

Ascertainment of exposure

Demonstration that outcome

of interest was not present at

start of study

Comparability of cohorts on the basis of the design or analysis

Assessment of outcome

Was follow-up long enough

Adequacy of follow up of cohorts

Sakin et al. [10]

9

Pan et al. [11]

 

8

Suzuki et al. [18]

9

Suzuki et al. [19]

 

8

Wen et al. [21]

 

 

7

Käsmann et al. [16]

8

Cao et al. [15]

9

Shao et al. [17]

 

7

Xie et al. [12]

9

Kang et al. [9]

8

Wang et al. [20]

 

8

  1. : each individual asterisk (‘’) signifies one point