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Table 2 Newcastle-Ottawa Scale risk of bias assessment of observational studies

From: The association between balance and free-living physical activity in an older community-dwelling adult population: a systematic review and meta-analysis

Study

Selection

(max. 5 stars)

Comparability

(max. 2 stars)

Outcome

(max. 3 stars)

Total

(max. 10 stars)

Aoyagi et al., 2009 [47]

***

*

***

7

Brooke-Wavell & Cooling, 2008 [50]

*

*

***

5

Buatois et al., 2007 [51]

*

*

***

5

Dewhurst et al., 2014 [69]

**

 

**

4

Fong & Ng, 2006 [52]

*

*

***

5

Fong et al.,2014 [53]

*

*

***

5

Gao et al., 2011[48]

***

*

***

7

Gauchard et al., 1999 [54]

*

 

***

4

Gauchard et al., 2001[55]

*

 

***

4

Gauchard et al., 2003[56]

*

 

**

3

Gaudagnin et al., 2015

*

 

***

4

Gyllensten et al., 2010 [64]

***

*

***

7

Hakim et al., 2004[70]

*

 

***

4

Hakim et al., 2010 [57]

*

 

***

4

Lu et al., 2013[65]

*

*

***

5

Perrin et al., 1999[72]

*

 

***

4

Rahal et al., 2015[58]

  

**

2

Tsang & Hui-Chan, 2004 [59]

***

 

***

6

Tsang & Hui-Chan, 2005 [60]

***

*

***

7

Tsang et al., 2004 [66]

***

 

***

6

Tsang & Hui-Chan, 2006 [61]

***

*

***

7

Tsang & Hui-Chan, 2010 [62]

***

*

***

7

Wayne et al., 2014 [49]

***

*

***

7

Wong et al., 2001 [67]

*

*

***

4

Wong et al., 2011 [68]

 

*

***

4

Zhang et al., 2011 [63]

 

*

***

4