Bedwetting epidemiology and demographics
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Editor(s)-in-Chief: C. Michael Gibson, M.S.,M.D. [1] Phone:617-632-7753; Steven C. Campbell, M.D., Ph.D., [2] Phone:216-444-5595 Professor of Surgery, Residency Program Director, Section of Urologic Oncology, Glickman Urological and Kidney Institute, Cleveland Clinic.
Epidemiology and Demographics
Males are more likely to wet the bed than females. Males make up 60% of bed-wetters overall and make up more than 90% of those who wet nightly (Schmitt, 1997).
Doctors frequently consider bedwetting as a self-limiting problem, since most children will grow out of it.
Approximate bedwetting rates are:
- Age 5: 20%
- Age 6: 10 to 15%
- Age 7: 7%
- Age 10: 5%
- Age 15: 1-2%
- Age 18-64: 0.5%-1% [3]
Children 5 to 9 years old have a spontaneous cure rate of 14% per year. Adolescents 10 to 18 years old have a spontaneous cure rate of 16% per year.
As can be seen from the numbers above, 5% to 10% of bedwetting children will not outgrow the problem, leaving 0.5% to 1% of adults still dealing with bedwetting. [4]Individuals who are still enuretic at age 18 are likely to deal with bedwetting throughout their lives. Adult rates of bedwetting show little change due to spontaneous cure. [5]
Studies of bedwetting in adults have found varying rates. The most-quoted study in this area was done in the Netherlands. It found a 0.5% rate for 18-64 year olds. A Hong Kong study, however, found a much higher rate. The Hong Kong researchers found a bedwetting rate of 2.3% in 16 to 40 year olds. [6]