How do individuals sleep around the world? Results from a single-day survey in ten countries

Soldatos, Constantin R.; Allaert, François-André; Ohta, Tetsuo; Dikeos, Dimitris

doi:10.1016/j.sleep.2004.10.006

Cited by 260 publications

(201 citation statements)

References 16 publications

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“…These prevalences of insomnia in our sample are higher than those of the general population. 30,31 Khatami and colleagues examined 100 clinic patients with epilepsy and found sleep onset insomnia in 33 of 98 subjects (34%) and sleep maintenance insomnia in 50 of 97 subjects (52%). 17 Lower prevalence of insomnia in epilepsy patients has been reported by Piperidou and colleagues, who found that only 24% of their cohort of 122 subjects suffered from insomnia, as measured with the Athens Insomnia Scale (AIS).…”

Section: Discussionmentioning

confidence: 99%

Insomnia and Epilepsy: A Questionnaire-Based Study

Vendrame

Yang

Jackson

et al. 2013

Journal of Clinical Sleep Medicine

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Study Objectives: Although disturbed sleep has been frequently reported in patients with seizures, little is known about insomnia and epilepsy. The aims of this study were (1) to analyze the prevalence and degree of insomnia in patients with epilepsy, (2) to examine the clinical features and correlates of insomnia in these patients, and (3) to evaluate the impact of poor sleep on their quality of life. Methods: One hundred-fi fty-two patients with epilepsy (mean age 46 years) completed the following questionnaires: Insomnia Severity Index, Pittsburgh Sleep Quality Index, Beck Depression Inventory-II, Quality of Life in Epilepsy Inventory-31. Patients with other known sleep disorders, including obstructive sleep apnea, were excluded from the study. Regression analysis was conducted for adjusting for age, years since epilepsy onset, number of antiepileptic drugs, comorbidities, and depression scores.Results: More than half of the participants (55%) suffered from insomnia and more than 70% were "poor sleepers." Insomnia and poor sleep quality were signifi cantly correlated with the number of antiepileptic medications and scores of depressive symptoms. After controlling for covariates, insomnia and poor sleep quality were signifi cant predictors of lower quality of life. Conclusion: These results suggest that insomnia and poor sleep are common in patients with epilepsy and may adversely impact quality of life. Further studies should examine whether improvements in sleep can improve seizure control and quality of life of these patients.

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Section: Discussionmentioning

confidence: 99%

Insomnia and Epilepsy: A Questionnaire-Based Study

Vendrame

Yang

Jackson

et al. 2013

Journal of Clinical Sleep Medicine

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“…The correlations obtained between the AIS and the BDI, BAI and GHQ-12 are consistent with the literature [5,6,8,33] and provide evidence of validity of the AIS. Soldatos et al [34] conducted a one-day survey on sleep disorders across countries, including Spain. Although the community sample Qual Life Res in this study had a much higher percentage of women, the mean age was very similar.…”

Section: Discussionmentioning

confidence: 99%

A Spanish version of the athens insomnia scale

2011

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Objectives To develop and validate a Spanish version of the Athens Insomnia Scale (AIS). Methods The AIS is designed to assess sleep difficulty and comprises eight items: the first five refer to the sleep disturbance and the last three to the daytime consequences. Either the full eight-item scale (AIS-8) or the brief form (AIS-5) can be administered. The adaptation used a backtranslation design. The validation process was based on a sample of 323 participants (undergraduates, community sample and psychiatric outpatients), which completed the AIS and other questionnaires: anxiety (BAI), depression (BDI) and psychological well-being (GHQ-12) scales. Results The internal consistency coefficients for both versions were above 0.80. The study of dimensionality revealed a single factor with high loadings and a percentage of explained variance above 50% in both versions. Test-retest reliability was above 0.70 (AIS-5) and over 0.80 (AIS-8) at a one-month interval. The correlation between the AIS and the previously mentioned scales was for both the AIS-5 and the AIS-8 above 0.40 and 0.50, respectively. ConclusionThe psychometric properties of both versions of the Spanish form of the AIS demonstrate that the scale is a valid and reliable instrument for the assessment of insomnia in Spanish-speaking populations.

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“…They found no significant differences in the prevalence of sleep disorders between these cities, and therefore they pooled the data and detected moderate or severe insomnia in 25.4% of the individuals. Finally, Soldatos et al (27), who carried out a oneday sleep survey on March 21, 2002, throughout the world, found that Brazil is the country that most differs regarding sleep disorders, having the population with the highest prevalence of 5 of 8 Athens Insomnia Scale symptoms rated as moderate to severe. According to the definition of primary insomnia by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV), on average, throughout the world, 12.1% subjects meet this criterion, whereas the prevalence is of 31.8% for Brazil (the highest found).…”

Section: Discussionmentioning

confidence: 99%

Sleep habits and complaints of adults in the city of São Paulo, Brazil, in 1987 and 1995

Pires¹,

Benedito-Silva²,

Mello³

et al. 2007

Braz J Med Biol Res

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This study compares the prevalence of complaints of insomnia, excessive diurnal sleepiness, parasomnias, and sleep habits of the adult population in the city of São Paulo, Brazil, estimated in surveys carried out in 1987 and 1995. Representative samples of 1000 adult residents per survey were interviewed using a validated structured sleep questionnaire, the "UNIFESP Sleep Questionnaire". Difficulty maintaining sleep, difficulty initiating sleep and early morning awakening, occurring at least three times a week, were reported in 1987 and 1995, by 15.8/27.6, 13.9/19.1, and 10.6/14.2% of the interviewees, respectively, significantly increasing throughout time. These sleep problems were more often found among women. Frequencies of excessive diurnal sleepiness and sleep attacks were unchanged comparing 1987 with 1995 (4.5 vs 3.8 and 3.1 vs 3.0%, respectively). Parasomnia complaints remained unchanged, with the exception of leg cramps, which doubled in prevalence from 1987 to 1995 (2.6 to 5.8%). Snoring was the most common parasomnia (21.5% in 1995), reported more often by men than by women, and somnambulism was the least common (approximately 1%). Besides sleeping slightly less, interviewees went to bed and woke up later in 1995. Approximately 12% of the subjects in both surveys had consulted a physician due to sleep problems and 3.0% reported habitual use of sleep-promoting substances in 1995. Overall, there was a significant increase in insomnia complaints from 1987 to 1995 in the general population of the city of São Paulo. This major change over a little under a decade should be considered as an important public health issue.

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How do individuals sleep around the world? Results from a single-day survey in ten countries

Cited by 260 publications

References 16 publications

Insomnia and Epilepsy: A Questionnaire-Based Study

Insomnia and Epilepsy: A Questionnaire-Based Study

A Spanish version of the athens insomnia scale

Sleep habits and complaints of adults in the city of São Paulo, Brazil, in 1987 and 1995

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