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Table 5 Methodological quality assessment of included cross-sectional, case-control and cohort studies (n = 11) using the Newcastle-Ottawa Scale

From: Psychosocial and personal predisposing factors of frostbite injury and associated amputation: a systematic review

Author(s), year, country

Selection

Comparability

Outcome

Total score

Representativeness of the sample

(one star)

Sample size

(one star)

Non-respondents

(one star)

Ascertainment of the exposure

(two stars)

Based on design and analysis

(two stars)

Assessment of outcome

(two stars)

Statistical test

(one star)

Endorf et al., 2022a, USA

*

  

**

**

**

*

8

Endorf et al., 2022b, USA

*

*

 

**

**

**

*

9

Endorf et al., 2021a, USA

*

*

*

**

**

**

*

10

Endorf et al., 2021b, USA

*

*

*

**

**

**

*

10

Ervasti et al., 2004, Finland

*

*

*

**

*

**

*

9

Fabian et al., 2017, Canada

 

*

 

**

*

**

*

7

Harirchi et al., 2005, Iran

 

*

 

*

*

**

 

5

Lehmuskallio et al., 1995, Finland

 

*

 

**

*

**

*

7

Lindford et al., 2017, Finland

*

 

*

**

**

**

 

8

Makinen et al., 2009, Finland

*

*

 

*

*

**

*

7

Masood et al., 2008, Pakistan

 

*

*

**

*

**

 

7

  1. One star (✱) = 1 point. Quality score classification: 9–10 points = very good studies; 7–8 points = good studies; 5–6 points = satisfactory studies; 0–4 points = unsatisfactory studies
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Injury Epidemiology

ISSN: 2197-1714