A main source for the ages
The prevalence of infrequent bedwetting and nocturnal enuresis in childhood
Richard Butler, Jon Heron · 2008 · Scandinavian Journal of Urology and Nephrology
- Children
- About 14,000 children
- Where
- England
- Ages
- 4½ to 9½ years
- How
- Parents' questionnaires
- What it found
- About 3 in 10 children still wet the bed at least sometimes at 4½, falling to about 1 in 10 at 9½, with the fastest drop between 4½ and 5½.
- Limits
- We have only read the summary. The exact definition of bedwetting is in the full paper.