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Table 2 Quality scores assessing the risk of bias using a modified Newcastle-Ottawa scale

From: A systematic review of depression and anxiety in medical students in China

Study type: Cross-sectional; Score: 1 = achieved, 0 = not achieved

Authors

Representativeness of the sample

Sample size

Non-respondents

Ascertainment of the exposure

Comparability of subjects in different outcome groups (control for confounding)

Assessment of the outcome

A statistical test is appropriate

Total score

Lin, 2018 [62]

0

1

1

1

1

1

1

6

Li, 2017 [63]

1

1

1

1

1

1

1

7

Pan, 2016 [64]

1

1

0

1

1

1

1

6

Li, 2015 [65]

0

1

1

1

1

1

1

6

Li, 2015 [66]

1

1

1

1

1

1

1

7

Zhai, 2006 [67]

0

1

1

1

1

1

1

6

Guo, 2014 [35]

0

1

1

1

1

1

1

6

Ren, 2013 [68]

0

1

1

1

1

1

1

6

Ruan, 2011 [69]

0

1

0

1

1

1

1

5

Sun, 2011 [70]

1

1

1

1

1

1

1

7

Feng, 2010 [71]

0

1

1

1

1

1

1

6

Shang, 2009 [72]

1

1

1

1

1

1

1

7

Li, 2009 [73]

0

1

1

1

1

1

1

6

He, 2009 [74]

0

1

1

1

1

1

1

6

Liu, 2009 [75]

0

1

1

1

1

1

1

6

Liang, 2007 [76]

0

1

1

1

1

1

1

6

Qu, 2014 [34]

0

1

1

1

1

1

1

6

Yang, 2005 [77]

0

1

1

1

1

1

1

6

Zhou, 2003 [78]

0

1

1

1

1

1

1

6

Yu, 2001 [79]

0

1

0

1

1

1

1

5

Wu, 2000 [80]

1

1

1

1

1

1

1

7