National Sleep Foundation

Chapter 5: Circadian Rhythm Sleep Disorders

Prevalence

What is the prevalence of delayed sleep phase disorder (DSPD)?

The prevalence of delayed sleep phase disorder (DSPD) in the general population is unknown, but it is found most frequently in young adults, with an estimated prevalence of 7%.1 DSPS associated daytime sleepiness has negative affects on school performance during the teenage years.2 DSPD has been observed in up to 16% of patients presenting to sleep disorders clinics with a primary complaint of insomnia.3

References

  1. Pelayo RP, Thorpy M, Glovinsky P. Prevalence of delayed sleep phase syndrome among adolescents. J Regestein QR, Monk TH. Delayed sleep phase syndrome: a review of its clinical aspects. Am J Psychiatry. 1995;152:602-608.Sleep Res. 1988;17:392.
  2. Pagel, JF, Forister N, Kwiatkowski C. Adolescent sleep disturbance and school performance: the confounding variable of socioeconomics. 2007;3(1):19-23.
  3. Regestein QR, Monk TH. Delayed sleep phase syndrome: a review of its clinical aspects. Am J Psychiatry. 1995;152:602-608.