6/21/2023 0 Comments Acute insomnia![]() These data, while suggestive, do not allow for a determination of 1) the lifetime prevalence of acute and chronic insomnia 2) how frequently acute insomnia occurs within the individual over the lifespan 3) the factors mediate/moderate the transition from acute to chronic insomnia. Approximately 70% in this cohort reported insomnia symptoms during at least one interview, indicating a very high 20-year prevalence. Sleep questions from each interview were used to determine both the occurrence of insomnia symptoms as well as a insomnia diagnosis using a proxy definition. 9 In this 20-year prospective study 591 adults completed six separate interviews over the course of two decades. Perhaps a more reasonable estimate can be drawn from a recent study on the long-term course of insomnia reported by Buysse et al. ![]() In an older sample, the lifetime prevalence would likely be substantially higher if for no other reason than increased opportunity to experience insomnia, not to mention the cumulative effects of aging and illness. The lifetime prevalence of insomnia, defined as ≥ 2 weeks of trouble falling or staying asleep, was 24.6%. 8 used the Diagnostic Interview Schedule to assess lifetime prevalence of DSM-III-R diagnoses in a sample of 21–30 year-olds. To our knowledge, only one study has specifically assessed lifetime prevalence. While it is important to estimate point prevalence (to define how widespread a disorder or disease is), such data do not address several related issues: 1) what is the relative prevalence of acute and chronic insomnia 2) how frequently do acute episodes of insomnia occur within the individual 3) how many episodes of acute insomnia occur, on average, before the insomnia condition becomes chronic and 4) what factors mediate/moderate the transition from acute to chronic insomnia. The latter definitions, while not taking into account severity or chronicity, do approximate the level of detail required for formal diagnosis using current nosologies 6, 7 and thus likely represent the prevalence of insomnia as a disorder in the population at large. When frequency considerations were taken into account, as well as the complaint of daytime consequences, then the prevalence rates were reduced to between 6% and 18%. When no frequency/severity/chronicity criteria were specified, prevalence rates ranged from 30% to 48% of respondents. Many studies used one or more questions pertaining to symptoms of insomnia, asking respondents to indicate whether they had trouble falling asleep, staying asleep, or with early morning awakenings. One of the most important findings from this literature was that the prevalence varied considerably depending on how insomnia was defined ( Fig. These studies were comprehensively reviewed by Ohayon 5 in 2002. The prevalence of insomnia has been examined in several dozen studies.
0 Comments
Leave a Reply. |