Skip to main content

Table 2 Study assessment using the Newcastle-Ottawa Scale

From: Inducible nitric oxide synthase and systemic lupus erythematosus: a systematic review and meta-analysis

Study

Patient selection

Comparability

Exposure

Total stars

Belmont 1997 [32]

4*

1*

2*

7*

Kuhn 1998 [22]

3*

1*

1*

5*

Gong 2002 [33]

4*

1*

1*

6*

Xu 2003 [34]

3*

1*

2*

6*

Zheng 2006 [35]

4*

1*

1*

6*

Bollain 2009 [36]

4*

1*

2*

7*

  1. * indicates item achieves 1piont in Newcastle-Ottawa Scale