Table 2.

Quality assessment the studies included in the systematic review.

Study	Selection	Comparability	Outcome	Total
Al-Kuwaiti et al. (2015) [15]	***	*	***	7
Alodhayani et al. (2020) [16]	***		**	5
Sabbour et al. (2018) [17]	*		**	3
Sibel et al. (2015) [19]	***	*	***	7
Sibel et al. (2015) [19]	***	*	***	7
Rania et al. (2019) [20]	****		****	8
Alqahtani et al. (2021) [23]	***	*	**	6
Alqahtani et al. (2019) [24]	***		***	6
Christa et al. (2016) [25]	****	*	**	7
Sisi et al. (2019) [26]	****		***	7
Hulya et al. (2015) [27]	***		**	5

From 0–3 stars indicate low-quality, moderate quality (4–6 stars), and high quality (7–9 stars).