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Table 2 Assessment of the quality of the studies based on the NOS

From: Robot-assisted thoracic surgery versus video-assisted thoracic surgery for lung lobectomy or segmentectomy in patients with non-small cell lung cancer: a meta-analysis

Study

Selection (Out of 4)

Comparability (Out of 2)

Outcomes (Out of 3)

Total (Out of 9)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

Lee [26]

*

*

*

*

*

*

*

*

8

Bao [27]

*

*

*

*

**

*

  

7

Oh [28]

*

*

*

*

**

*

  

7

Yang [29]

*

*

*

*

**

*

*

*

9

Liu [30]

*

*

*

*

*

*

*

*

8

Ma [31]

*

*

*

*

**

*

  

7

Merritt [32]

*

*

*

*

**

*

  

7

Li JT [33]

*

*

*

*

**

*

  

7

Li [34]

*

*

*

*

**

*

*

 

8

Tong [35]

*

*

*

*

**

*

  

7

Huang [36]

*

*

*

*

**

*

  

7

Tian [37]

*

*

*

*

**

*

  

7

Veluswamy [38]

*

*

*

*

**

*

*

*

9

Zhou [39]

*

*

*

*

**

*

*

*

9

Haruki [40]

*

*

*

*

**

*

*

*

9

Zhang [41]

*

*

*

*

**

*

  

7

Qiu [42]

*

*

*

*

*

*

*

*

8

Kneuertz [43]

*

*

*

*

**

*

*

*

9

  1. (1) Representativeness of the exposed cohort, (2) selection of the non-exposed cohort, (3) ascertainment of exposure, (4) demonstration that outcome of interest was not present at the start of the study, (5) assessment of outcome, (6) was follow-up long enough for outcomes to occur, (7) adequacy of follow-up of cohorts
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BMC Cancer

ISSN: 1471-2407

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