Copyright © American Speech-Language-Hearing Association From: A Systematic Review of Treatment Outcomes for Children With Childhood Apraxia of Speech Am J Speech Lang Pathol. 2014;23(3):486-504. doi:10.1044/2014_AJSLP-13-0035 Legend: Flow diagram of study selection (adapted from Preferred Reporting Items for Systematic Reviews and Meta-Analyses [PRISMA]; Moher et al., 2009). CAS = childhood apraxia of speech; Ax = assessment; Dx = diagnosis; RCT = randomized controlled trial; NRCT = nonrandomized controlled trial; SCED = single-case experimental design; AAC = augmentative and alternative communication. Date of download: 10/28/2017 Copyright © American Speech-Language-Hearing Association