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Table 1 Characteristics of included studies

From: The effects of vitamin D supplementation in carpal tunnel syndrome treatment outcomes: a systematic review

First Author

Year of publication

Country

Study design

Recruitment Period

Number of patients

MINORS scores

Samant et al. [36]

2021

India

Prospective cohort

2020

42

11/16

Saçmaci et al. [35]

2020

Turkey

Retrospective cohort

2017–2018

55

9/16

Lee et al. [21]

2019

Korea

Retrospective cohort

2014–2016

84

7/16

Mohtashamkia et al. [26]

2018

Iran

Prospective cohort

2015

50

13/16

  1. MINORS Methodological items for non-randomized studies