Figures & data
Table I. Databases and search engine supplier used to electronically search for stuttering treatment studies.
Table II. Reporting quality sub-scale scores.
Table III. External validity quality sub-scale scores.
Table IV. Internal validity-bias quality sub-scale scores.
Table V. Internal validity-confounding quality sub-scale scores.
Table VI. Study characteristics (frequency and percentage).
Table VII. Mean (SD) quality ratings by research design and K-S test results.
Table VIII. Mean (SD) quality ratings by age group and K-S test results.
Table IX. Mean (SD) quality ratings by year of publication and Kruskal Wallis test results.
Table X. Mean (SD) quality ratings by journal.