Table 2 Quality assessment of the included studies based on the NOS checklist (adapted for cross sectional studies)

Nakazato et al., 2002

*

*

*

**

*

*

7

Nakazato et al., 2006

*

*

**

*

*

6

Nakazato et al., 2009

*

*

*

**

*

*

7

Yamada et al., 2012

*

*

*

*

*

5

Dmitrzak-Weglarz et al., 2013

*

*

*

**

*

*

7

Zwipp et al., 2014

*

*

*

*

*

*

6

Eddy et al., 2015

*

*

*

**

*

*

7

Homan et al., 2015

*

*

**

*

*

6

Rybakowski et al., 2017

*

*

*

*

**

*

7

Matsumoto et al., 2017

*

*

*

**

*

*

7

Mancuso et al., 2020

*

*

*

**

*

*

7

Tyszkiewicz-Nwafor et al., 2020

*

*

*

*

*

*

6

Borsdorf et al., 2021

*

*

*

*

**

*

*

8

Keeler et al., 2022

*

*

*

**

*

6