Table 2.

Newcastle–Ottawa quality assessment scale for cohort studies

Author	Year	Selection	Comparability	Outcome	NOS
Aiolfi [14]	2022	★★★★	★	★★	8
Bouriez [13]	2022	★★★	★★	★★★	8
Low [17]	2002	★★★★	★★	★★	8
Naoum [15]	2017	★★★	★★	★★	7
Naoum [16]	2011	★★★★	★★	★★★	9