Table 3 The results of the risk of bias assessment of each of the primary studies included in the study

G S Ozler (2014) [14]

-

*

*

*

-

*

*

*

6

Nabiha Farasat Khan (2013) [15]

*

*

*

*

**

*

*

*

9

Pia Lopez-Jornet(2014) [16]

*

*

*

*

**

*

*

*

9

Kamran Sari (2016) [17]

*

*

*

*

**

*

*

*

9

Zuzanna Slebioda (2018) [18]

*

*

*

*

**

*

*

*

9

Moin Sabeer Tidgundi(2017) [19]

*

*

*

*

**

*

*

*

9

Zuzanna Ślebioda (2017) [20]

*

*

*

*

-

*

*

*

8

Funda Tamer (2019) [21]

-

*

*

*

**

*

*

*

8

Vandana Sharma (2022) [22]

*

*

*

*

**

*

*

*

9

Subhasish Mustafi (2021) [23]

*

*

*

*

**

*

*

*

9

Song€ul Yılmaz (2020) [24]

*

*

*

*

**

*

*

*

9

Saime Sagiroglu (2018) [25]

*

*

*

*

**

*

*

*

9

Hatice Kaya Ozden (2021) [26]

*

*

*

*

**

*

*

*

9

Samar Z. Burgan(2006) [27]

*

*

*

*

**

*

*

*

9

Nurdiana, Pocut Astari (2018) [4]

*

*

*

*

**

*

*

*

9

Zhe-Xuan Bao (2017) [28]

*

*

*

*

**

*

*

*

9

Shaheen Ali Ahmed (2021) [29]

*

*

*

*

**

*

*

*

9

Suhail H. Al-Amad (2019) [30]

*

*

*

*

**

*

*

*

9

Noor S. Mohammed Ali (2022) [31]

-

*

*

*

**

*

*

*

8

Fateme Arbabi-Kalati (2014) [32]

-

*

*

*

**

*

*

*

8

Neda Babaee (2015) [33]

-

*

*

*

**

*

*

*

8

Andy Sun (2014) [34]

*

*

*

*

**

*

*

*

9