New research study (2025), PART 2: **"Adult stuttering prevalence II: Recalculation, subgrouping and estimate of stuttering community engagement**" (2025) [https://www.sciencedirect.com/science/article/pii/S0094730X24000500](https://www.sciencedirect.com/science/article/pii/S0094730X24000500)