Table 3.

Quality assessment using the TESTEX checklist. 1 = criteria met; 0 = criteria not met

	1	2	3	4	5	6a	6b	6c	7	8a	8b	9	10	11	12	Total score (max 15 p)
Aerenhouts & D’hondt 2020 [23]	1	1	0	1	0	0	1	0	0	1	1	1	0	1	1	11
Augustsson et al., 1998 [32]	1	0	0	1	0	1	0	1	0	1	1	1	1	1	1	10
Fry et al., 1992 [34]	0	0	0	1	0	0	0	0	0	1	1	1	1	1	1	7
Langford et al., 2007 [12]	0	0	0	1	0	0	0	0	0	1	1	1	1	1	1	7
Lennon et.,al 2010 [35]	0	0	0	1	0	1	0	0	0	1	0	1	0	1	1	8
Mayhew et.,al 2010 [36]	1	0	0	1	0	1	0	0	0	1	1	1	0	1	1	9
Prieto-Gonzalez &Sedlack 2021 [24]	0	0	0	1	0	0	0	0	0	1	1	1	1	1	1	7
Rossi et al.,2018 [37]	1	0	1	1	0	1	0	0	0	1	1	1	0	1	1	9
Saeterbakken et al.,2019 [4]	1	0	1	1	0	1	0	0	0	1	1	1	0	1	1	9
Saeterbakken et al.,2016 [27]	1	1	0	1	0	0	0	0	0	1	1	1	1	1	1	9
Schwanbeck et al.,2020 [38]	0	1	0	1	0	0	0	0	0	1	1	1	0	1	1	9
Schwarz et al., 2019 [39]	1	0	0	1	0	1	0	0	0	1	1	1	0	1	1	9
Wirth et al., 2016 [40]	0	0	0	1	0	1	0	0	0	1	1	1	0	1	1	8
Sum	7	3	1	13	0	7	1	2	0	13	13	13	13	13	13