Fact · Accessibility and health
49comparisons of experimental and control groups
The 2014 meta-analysis of reading treatments for children and adolescents included 49 comparisons of experimental and control groups from randomized controlled trials.
Checked against its source on October 16, 2026
In the source's own words
“randomized controlled trials with a total of 49 comparisons of experimental and control groups could be included”
Effectiveness of Treatment Approaches for Children and Adolescents with Reading Disabilities: A Meta-Analysis of Randomized Controlled Trials, Katharina Galuschka et al., PLoS ONE, 2014, Abstract.
Open the original (DOI 10.1371/journal.pone.0089900)- What it measures
- The trials covered reading fluency, phonemic awareness, reading comprehension, phonics, auditory training, medical treatments and coloured overlays, so the 49 comparisons span many approaches.
- What it does not show
- A comparison is one experimental group set against one control group, so 49 is not 49 separate studies. The number of children is not given in this fact.