Summary of findings: SLT probably leads to higher functional communication compared with no SLT (immediate outcome) (moderate certainty).
Summary of findings: SLT showed no clear difference in receptive language: auditory comprehension compared with no SLT (immediate outcome) (low certainty).
Summary of findings: SLT probably leads to higher receptive language: reading comprehension compared with no SLT (immediate outcome) (moderate certainty).
Summary of findings: SLT showed no clear difference in expressive language: naming compared with no SLT (immediate outcome) (low certainty).
Summary of findings: SLT may leads to higher expressive language: general compared with no SLT (immediate outcome) (low certainty).
Summary of findings: SLT probably leads to higher expressive language: written compared with no SLT (immediate outcome) (moderate certainty).
Summary of findings: SLT showed no clear difference in number of dropouts (for any reason) compared with no SLT (immediate outcome) (moderate certainty).