Study	Reason for exclusion
Aboud 2018	Training did not match this review's criteria for phonics training (Types of interventions); participants did not meet this review's criteria for participants (Types of participants).
Alexander 1991	Trial did not include control data (Types of interventions).
Arnold 2016	Participants did not meet this review's criteria for participants (Types of participants).
Berninger 2013	Training did not match this review's criteria for phonics training (Types of interventions); trial did not include control data.
Bhide 2013	Participants did not meet this review's criteria for participants (Types of participants).
Christodoulou 2017	Participants did not meet this review's criteria for participants (Types of participants).
Dubois 2014	Participants did not meet this review's criteria for participants (Types of participants).
Foorman 1997	Training did not match this review's criteria for phonics training (Types of interventions).
Foorman 1998	Training did not match this review's criteria for phonics training (Types of interventions).
Gillon 1997	Training did not match this review's criteria for phonics training (Types of interventions).
Gillon 2000	Group allocation did not use randomisation, quasi‐randomisation, or minimisation (Types of studies).
Gillon 2002	Group allocation did not use randomisation, quasi‐randomisation, or minimisation (Types of studies).
Goldstein 2017	Training did not match this review's criteria for phonics training (Types of interventions).
Gorard 2015	Training did not match this review's criteria for phonics training (Types of interventions).
Hatcher 1994	Training did not match this review's criteria for phonics training (Types of interventions).
Hatcher 2006	Training did not match this review's criteria for phonics training (Types of interventions).
Jeffes 2016	Training did not match this review's criteria for phonics training (Types of interventions).
King 2015	Training did not match this review's criteria for phonics training (Types of interventions).
Lovett 1988	Training did not match this review's criteria for phonics training (Types of interventions).
Lovett 1989	Training did not match this review's criteria for phonics training (Types of interventions).
Lovett 1994	Participants did not meet this review's criteria for participants (Types of participants).
Lovett 2012	Training did not match this review's criteria for phonics training (Types of interventions).
Merrell 2015	Training did not match this review's criteria for phonics training (Types of interventions).
Messer 2018	Training did not match this review's criteria for phonics training (Types of interventions); participants did not meet this review's criteria for participants (Types of participants).
Metsala 2017	Training did not match this review's criteria for phonics training (Types of interventions).
Munro 2017	Training did not match this review's criteria for phonics training (Types of interventions).
Olson 1992	Review paper (Types of studies)
Olson 1997	Training did not match this review's criteria for phonics training (Types of interventions).
Rashotte 2001	Training did not match this review's criteria for phonics training (Types of interventions).
Savage 2018	Participants did not meet this review's criteria for participants (Types of participants).
Schaars 2017	Participants did not meet this review's criteria for participants (Types of participants).
Schlesinger 2017	Training did not match this review's criteria for phonics training (Types of interventions).
Seiler 2018	Training did not match this review's criteria for phonics training (Types of interventions).
Steacy 2016	Training did not match this review's criteria for phonics training (Types of interventions).
Storey 2017	Training did not match this review's criteria for phonics training (Types of interventions).
Torgesen 1997	Reading was not assessed pre‐ and post‐training.
Torgesen 1999a	Training did not match this review's criteria for phonics training (Types of interventions).
Torgesen 2001	Training did not match this review's criteria for phonics training (Types of interventions); trial did not include control data.
Torgesen 2006	Training did not match this review's criteria for phonics training (Types of interventions).
Van Gorp 2017	Participants did not meet this review's criteria for participants (Types of participants).
Vellutino 1986	Training did not match this review's criteria for phonics training (Types of interventions).
Vellutino 1987	Training did not match this review's criteria for phonics training (Types of interventions).
Vellutino 1996	Training did not match this review's criteria for phonics training (Types of interventions).
Wheldall 2017	Training did not match this review's criteria for phonics training (Types of interventions).
Wise 1995	Training did not match this review's criteria for phonics training (Types of interventions); trial did not include control data.
Wise 1997	Training did not match this review's criteria for phonics training (Types of interventions).
Wise 1999	Training did not match this review's criteria for phonics training (Types of interventions).
Wise 2000	Training did not match this review's criteria for phonics training (Types of interventions); trial did not include control data.