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Table 2 Quality assessment of included studies, as scored using the mixed Method Appraisal Tool

From: Cognitive changes in people with diabetes with lower extremity complications compared to people with diabetes without lower extremity complications: a systematic review and meta-analysis

No

Author & Year

MMAT – 2018 Version¶

   

4.1

4.2

4.3

4.4

4.5

Score

%

Rating (29)

1.

Althubaity et al., 2011

0

1

1

0

1

3

60

Medium

2.

Blanquisco et al., 2017

1

1

1

1

1

5

100

High

3.

Brismar et al., 2007

1

1

1

0

1

4

80

Medium

4.

de Bresser et al., 2010

0

1

1

1

1

4

80

Medium

5.

Dejgaard et al., 1991

0

1

1

0

1

3

60

Medium

6.

Ding et al., 2019

0

1

1

0

1

3

60

Medium

7.

El-Tamawy et al., 2016

0

0

1

0

1

2

40

Low

8.

Moreira et al., 2015

0

1

1

1

1

4

80

Medium

9.

Natovich et al., 2016

0

1

1

0

1

3

60

Medium

10.

Perlmuter et al., 1984

0

1

1

0

1

3

60

Medium

11.

Roman de et al., 2013

0

1

1

0

1

3

60

Medium

12.

Zhang et al., 2021

0

1

1

0

1

3

60

Medium

13.

Zhao et al., 2021

0

1

1

0

1

3

60

Medium

Total

  

2 (15%)

12 (92%)

13 (100%)

3 (23%)

13 (100%)

   
  1. 0: No or can’t tell; 1: Yes
  2. ¶4.1 - Is the sampling strategy relevant to addressing the research question? 4.2 - Is the sample representative of the target population? 4.3 - Are the measurements appropriate? 4.4 - Is the risk of nonresponse bias low? 4.5 - Is the statistical analysis appropriate to answer the research question?