Symptoms of insomnia and sleep duration and their association with incident strokes: Findings from the population-based MONICA/KORA Augsburg Cohort Study

PLoS ONE

Volumn 10, Issue 7, 2015, Pages

  Helbig, A Katharina ^a   Stöckl, Doris ^a   Heier, Margit ^a   Ladwig, Karl Heinz ^a,b   Meisinger, Christa ^a  

^a INSTITUTE OF EPIDEMIOLOGY   (Germany)

^b TECHNICAL UNIVERSITY OF MUNICH   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

ADULT; AGED; ALCOHOL CONSUMPTION; ARTICLE; BODY MASS; BRAIN HEMORRHAGE; BRAIN ISCHEMIA; CEREBROVASCULAR ACCIDENT; COHORT ANALYSIS; CONTROLLED STUDY; DIABETES MELLITUS; DISEASE ASSOCIATION; DYSLIPIDEMIA; EDUCATIONAL STATUS; FEMALE; FOLLOW UP; GERMANY; HEALTH BEHAVIOR; HEALTH SURVEY; HUMAN; HYPERTENSION; INSOMNIA; MAJOR CLINICAL STUDY; MALE; MEDICAL HISTORY; PHYSICAL ACTIVITY; SEX DIFFERENCE; SLEEP TIME; SMOKING HABIT; SYMPTOM; TRANSIENT ISCHEMIC ATTACK; COMPLICATION; MIDDLE AGED; PATHOPHYSIOLOGY; SLEEP;

ADULT; AGED; COHORT STUDIES; FEMALE; HUMANS; MALE; MIDDLE AGED; SLEEP; SLEEP INITIATION AND MAINTENANCE DISORDERS; STROKE;

EID: 84941896814     PISSN: None     EISSN: 19326203     Source Type: Journal    
DOI: 10.1371/journal.pone.0134480     Document Type: Article

References (94)

1. Scherbakov N, von Haehling S, Anker SD, Dirnagl U, Doehner W. Stroke induced Sarcopenia: muscle wasting and disability after stroke. Int J Cardiol. 2013; 170(2): 89-94. doi: 10.1016/j.ijcard.2013.10.031 PMID: 24231058
2. Feigin VL, Lawes CM, Bennett DA, Barker-Collo SL, Parag V. Worldwide stroke incidence and early case fatality reported in 56 population-based studies: a systematic review. Lancet Neurol. 2009; 8(4): 355-69. doi: 10.1016/S1474-4422(09)70025-0 PMID: 19233729
3. Lozano R, Naghavi M, Foreman K, Lim S, Shibuya K, Aboyans V, et al. Global and regional mortality from 235 causes of death for 20 age groups in 1990 and 2010: a systematic analysis for the Global Burden of Disease Study 2010. Lancet. 2012; 380(9859): 2095-128. doi: 10.1016/S0140-6736(12)61728-0 PMID: 23245604
4. Feigin VL, Forouzanfar MH, Krishnamurthi R, Mensah GA, Connor M, Bennett DA, et al. Global and regional burden of stroke during 1990-2010: findings from the Global Burden of Disease Study 2010. Lancet. 2014; 383(9913): 245-54. PMID: 24449944
5. Kolominsky-Rabas PL, Heuschmann PU, Marschall D, Emmert M, Baltzer N, Neundorfer B, et al. Life-time cost of ischemic stroke in Germany: results and national projections from a population-based stroke registry: the Erlangen Stroke Project. Stroke. 2006; 37(5): 1179-83. PMID: 16574918
6. Blomstrand A, Blomstrand C, Ariai N, Bengtsson C, Bjorkelund C. Stroke incidence and association with risk factors in women: a 32-year follow-up of the Prospective Population Study of Women in Gothenburg. BMJ Open. 2014; 4(10): e005173. doi: 10.1136/bmjopen-2014-005173 PMID: 25351597
7. United Nations, Department of Economic and Social Affairs, Population Division. World Population Ageing 2013 [Internet]. 2013 [cited 2015 April]. Available from: http://www.un.org/en/development/desa/population/publications/pdf/ageing/WorldPopulationAgeing2013.pdf.
8. Tikk K, Sookthai D, Monni S, Gross ML, Lichy C, Kloss M, et al. Primary preventive potential for stroke by avoidance of major lifestyle risk factors: the European Prospective Investigation into Cancer and Nutrition-Heidelberg cohort. Stroke. 2014; 45(7): 2041-6. doi: 10.1161/STROKEAHA.114.005025 PMID: 24876086
9. Goldstein LB, Bushnell CD, Adams RJ, Appel LJ, Braun LT, Chaturvedi S, et al. Guidelines for the primary prevention of stroke: a guideline for healthcare professionals from the American Heart Association/American Stroke Association. Stroke. 2011; 42(2): 517-84. doi: 10.1161/STR.0b013e3181fcb238 PMID: 21127304
10. Larsson SC, Akesson A, Wolk A. Primary prevention of stroke by a healthy lifestyle in a high-risk group. Neurology. 2015.
11. Wu MP, Lin HJ, Weng SF, Ho CH, Wang JJ, Hsu YW. Insomnia subtypes and the subsequent risks of stroke: report from a nationally representative cohort. Stroke. 2014; 45(5): 1349-54. doi: 10.1161/STROKEAHA.113.003675 PMID: 24699057
12. Westerlund A, Bellocco R, Sundstrom J, Adami HO, Akerstedt T, Trolle Lagerros Y. Sleep characteristics and cardiovascular events in a large Swedish cohort. Eur J Epidemiol. 2013; 28(6): 463-73. doi: 10.1007/s10654-013-9802-2 PMID: 23553209
13. Cappuccio FP, D'Elia L, Strazzullo P, Miller MA. Sleep duration and all-cause mortality: a systematic review and meta-analysis of prospective studies. Sleep. 2010; 33(5): 585-92. PMID: 20469800
14. Pan A, De Silva DA, Yuan JM, Koh WP. Sleep Duration and Risk of Stroke Mortality Among Chinese Adults: Singapore Chinese Health Study. Stroke. 2014.
15. Schlack R, Hapke U, Maske U, Busch M, Cohrs S. [Frequency and distribution of sleep problems and insomnia in the adult population in Germany: results of the German Health Interview and Examination Survey for Adults (DEGS1)]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2013; 56(5-6): 740-8. doi: 10.1007/s00103-013-1689-2 PMID: 23703493
16. Robert Koch-Institut. [Federal Health Reporting: Sleep disorders]. Publication 27. Berlin: Robert Koch-Institut; 2005.
17. Birbaumer N, Schmidt RF. [Biological Psychology]. Heidelberg: Springer-Verlag; 2010.
18. Palma JA, Urrestarazu E, Iriarte J. Sleep loss as risk factor for neurologic disorders: a review. Sleep Med. 2013; 14(3): 229-36. doi: 10.1016/j.sleep.2012.11.019 PMID: 23352029
19. Aldabal L, Bahammam AS. Metabolic, endocrine, and immune consequences of sleep deprivation. Open Respir Med J. 2011; 5: 31-43. doi: 10.2174/1874306401105010031 PMID: 21754974
20. Jackowska M, Hamer M, Carvalho LA, Erusalimsky JD, Butcher L, Steptoe A. Short sleep duration is associated with shorter telomere length in healthy men: findings from the Whitehall II cohort study. PLoS One. 2012; 7(10): e47292. doi: 10.1371/journal.pone.0047292 PMID: 23144701
21. Chaput JP. Sleep patterns, diet quality and energy balance. Physiol Behav. 2014; 134: 86-91. doi: 10.1016/j.physbeh.2013.09.006 PMID: 24051052
22. Grandner MA, Drummond SP. Who are the long sleepers? Towards an understanding of the mortality relationship. Sleep Med Rev. 2007; 11(5): 341-60. PMID: 17625932
23. Sattar N, Murray HM, Welsh P, Blauw GJ, Buckley BM, Cobbe S, et al. Are markers of inflammation more strongly associated with risk for fatal than for nonfatal vascular events? PLoS Med. 2009; 6(6): e1000099. doi: 10.1371/journal.pmed.1000099 PMID: 19554082
24. WHO MONICA Project Principal Investigators. The World Health Organization MONICA Project (monitoring trends and determinants in cardiovascular disease): a major international collaboration. WHO MONICA Project Principal Investigators. J Clin Epidemiol. 1988; 41(2): 105-14. PMID: 3335877
25. Löwel H, Doring A, Schneider A, Heier M, Thorand B, Meisinger C. The MONICA Augsburg surveysbasis for prospective cohort studies. Gesundheitswesen. 2005; 67 Suppl 1: S13-8. PMID: 16032512
26. Holle R, Happich M, Lowel H, Wichmann HE. KORA-a research platform for population based health research. Gesundheitswesen. 2005; 67 Suppl 1: S19-25. PMID: 16032513
27. Icks A, Dickhaus T, Hormann A, Heier M, Giani G, Kuch B, et al. Differences in trends in estimated incidence of myocardial infarction in non-diabetic and diabetic people: Monitoring Trends and Determinants on Cardiovascular Diseases (MONICA)/Cooperative Health Research in the Region of Augsburg (KORA) registry. Diabetologia. 2009; 52(9): 1836-41. doi: 10.1007/s00125-009-1434-4 PMID: 19603150
28. Patel SR, Malhotra A, Gottlieb DJ, White DP, Hu FB. Correlates of long sleep duration. Sleep. 2006; 29 (7): 881-9. PMID: 16895254
29. Kronholm E, Laatikainen T, Peltonen M, Sippola R, Partonen T. Self-reported sleep duration, all-cause mortality, cardiovascular mortality and morbidity in Finland. Sleep Med. 2011; 12(3): 215-21. doi: 10.1016/j.sleep.2010.07.021 PMID: 21317033
30. Meisinger C, Heier M, Loewel H. Sleep disturbance as a predictor of type 2 diabetes mellitus in men and women from the general population. Diabetologia. 2005; 48(2): 235-41. PMID: 15645205
31. Rehm J, Room R, Monteiro M, Gmel G, Graham K, Rehn N, et al. Alcohol as a risk factor for global burden of disease. Eur Addict Res. 2003; 9(4): 157-64. PMID: 12970584
32. Rose GA. The diagnosis of ischaemic heart pain and intermittent claudication in field surveys. Bull World Health Organ. 1962; 27: 645-58. PMID: 13974778
33. Ladwig KH, Marten-Mittag B, Baumert J, Lowel H, Doring A. Case-finding for depressive and exhausted mood in the general population: reliability and validity of a symptom-driven diagnostic scale. Results from the prospective MONICA/KORA Augsburg Study. Ann Epidemiol. 2004; 14(5): 332-8. PMID: 15177272
34. von Zerssen D. [The Symptom-checklist. Clinical Self-rating Questionnaires from the Munich Psychiatric Information Sytem]. Psycho Manual, Main Part. Weinheim: Beltz-Verlag; 1976.
35. Meisinger C, Thorand B, Schneider A, Stieber J, Doring A, Lowel H. Sex differences in risk factors for incident type 2 diabetes mellitus: the MONICA Augsburg cohort study. Arch Intern Med. 2002; 162(1): 82-9. PMID: 11784224
36. Guidelines Subcommittee. 1999 World Health Organization-International Society of Hypertension Guidelines for the Management of Hypertension. Guidelines Subcommittee. J Hypertens. 1999; 17(2): 151-83. PMID: 10067786
37. Wright BM, Dore CF. A random-zero sphygmomanometer. Lancet. 1970; 1(7642): 337-8. PMID: 4189587
38. Meisinger C, Heier M, Volzke H, Lowel H, Mitusch R, Hense HW, et al. Regional disparities of hypertension prevalence and management within Germany. J Hypertens. 2006; 24(2): 293-9. PMID: 16508575
39. Cox D. Regression Models and Life-Tables. Journal of the Royal Statistical Society Series B (Methodological). 1972; 34(2): 187-220.
40. Allison P. Survival Analysis Using SAS: A Practical Guide, Second Edition: SAS Institute; 2010.
41. Van der Kooy K, van Hout H, Marwijk H, Marten H, Stehouwer C, Beekman A. Depression and the risk for cardiovascular diseases: systematic review and meta analysis. Int J Geriatr Psychiatry. 2007; 22(7): 613-26. PMID: 17236251
42. Mezick EJ, Hall M, Matthews KA. Are sleep and depression independent or overlapping risk factors for cardiometabolic disease? Sleep Med Rev. 2011; 15(1): 51-63. doi: 10.1016/j.smrv.2010.03.001 PMID: 20494595
43. Sofi F, Cesari F, Casini A, Macchi C, Abbate R, Gensini GF. Insomnia and risk of cardiovascular disease: a meta-analysis. Eur J Prev Cardiol. 2014; 21(1): 57-64. doi: 10.1177/2047487312460020 PMID: 22942213
44. Patyar S, Patyar RR. Correlation between Sleep Duration and Risk of Stroke. J Stroke Cerebrovasc Dis. 2015; 24(5): 905-11. doi: 10.1016/j.jstrokecerebrovasdis.2014.12.038 PMID: 25817615
45. Aggarwal S, Loomba RS, Arora RR, Molnar J. Associations between sleep duration and prevalence of cardiovascular events. Clin Cardiol. 2013; 36(11): 671-6. doi: 10.1002/clc.22160 PMID: 24122853
46. Altman NG, Izci-Balserak B, Schopfer E, Jackson N, Rattanaumpawan P, Gehrman PR, et al. Sleep duration versus sleep insufficiency as predictors of cardiometabolic health outcomes. Sleep Med. 2012; 13(10): 1261-70. doi: 10.1016/j.sleep.2012.08.005 PMID: 23141932
47. Grandner MA, Jackson NJ, Pak VM, Gehrman PR. Sleep disturbance is associated with cardiovascular and metabolic disorders. J Sleep Res. 2012; 21(4): 427-33. doi: 10.1111/j.1365-2869.2011.00990.x PMID: 22151079
48. Magee CA, Kritharides L, Attia J, McElduff P, Banks E. Short and long sleep duration are associated with prevalent cardiovascular disease in Australian adults. J Sleep Res. 2012; 21(4): 441-7. doi: 10.1111/j.1365-2869.2011.00993.x PMID: 22211671
49. Sabanayagam C, Shankar A. Sleep duration and cardiovascular disease: results from the National Health Interview Survey. Sleep. 2010; 33(8): 1037-42. PMID: 20815184
50. Shankar A, Syamala S, Kalidindi S. Insufficient rest or sleep and its relation to cardiovascular disease, diabetes and obesity in a national, multiethnic sample. PLoS One. 2010; 5(11): e14189. doi: 10.1371/journal.pone.0014189 PMID: 21152066
51. Michal M, Wiltink J, Kirschner Y, Schneider A, Wild PS, Munzel T, et al. Complaints of sleep disturbances are associated with cardiovascular disease: results from the Gutenberg Health Study. PLoS One. 2014; 9(8): e104324. doi: 10.1371/journal.pone.0104324 PMID: 25093413
52. Hamazaki Y, Morikawa Y, Nakamura K, Sakurai M, Miura K, Ishizaki M, et al. The effects of sleep duration on the incidence of cardiovascular events among middle-aged male workers in Japan. Scand J Work Environ Health. 2011; 37(5): 411-7. doi: 10.5271/sjweh.3168 PMID: 21528172
53. Huang WS, Tsai CH, Lin CL, Sung FC, Chang YJ, Kao CH. Nonapnea sleep disorders are associated with subsequent ischemic stroke risk: a nationwide, population-based, retrospective cohort study. Sleep Med. 2013; 14(12): 1341-7. doi: 10.1016/j.sleep.2013.07.017 PMID: 24211072
54. Sivertsen B, Lallukka T, Salo P, Pallesen S, Hysing M, Krokstad S, et al. Insomnia as a risk factor for ill health: results from the large population-based prospective HUNT Study in Norway. J Sleep Res. 2014; 23(2): 124-32. PMID: 24635564
55. Elwood P, Hack M, Pickering J, Hughes J, Gallacher J. Sleep disturbance, stroke, and heart disease events: evidence from the Caerphilly cohort. J Epidemiol Community Health. 2006; 60(1): 69-73. PMID: 16361457
56. Rod NH, Kumari M, Lange T, Kivimaki M, Shipley M, Ferrie J. The joint effect of sleep duration and disturbed sleep on cause-specific mortality: results from the Whitehall II cohort study. PLoS One. 2014; 9 (4): e91965. doi: 10.1371/journal.pone.0091965 PMID: 24699341
57. Rod NH, Vahtera J, Westerlund H, Kivimaki M, Zins M, Goldberg M, et al. Sleep disturbances and cause-specific mortality: Results from the GAZEL cohort study. Am J Epidemiol. 2011; 173(3): 300-9. doi: 10.1093/aje/kwq371 PMID: 21193534
58. Stone KL, Ewing SK, Ancoli-Israel S, Ensrud KE, Redline S, Bauer DC, et al. Self-reported sleep and nap habits and risk of mortality in a large cohort of older women. J Am Geriatr Soc. 2009; 57(4): 604-11. doi: 10.1111/j.1532-5415.2008.02171.x PMID: 19220560
59. von Ruesten A, Weikert C, Fietze I, Boeing H. Association of sleep duration with chronic diseases in the European Prospective Investigation into Cancer and Nutrition (EPIC)-Potsdam study. PLoS One. 2012; 7(1): e30972. doi: 10.1371/journal.pone.0030972 PMID: 22295122
60. Amagai Y, Ishikawa S, Gotoh T, Kayaba K, Nakamura Y, Kajii E. Sleep duration and incidence of cardiovascular events in a Japanese population: the Jichi Medical School cohort study. J Epidemiol. 2010; 20(2): 106-10. PMID: 20009370
61. Qureshi AI, Giles WH, Croft JB, Bliwise DL. Habitual sleep patterns and risk for stroke and coronary heart disease: a 10-year follow-up from NHANES I. Neurology. 1997; 48(4): 904-11. PMID: 9109875
62. Chen JC, Brunner RL, Ren H, Wassertheil-Smoller S, Larson JC, Levine DW, et al. Sleep duration and risk of ischemic stroke in postmenopausal women. Stroke. 2008; 39(12): 3185-92. doi: 10.1161/STROKEAHA.108.521773 PMID: 18635832
63. Leng Y, Cappuccio FP, Wainwright NW, Surtees PG, Luben R, Brayne C, et al. Sleep duration and risk of fatal and nonfatal stroke: a prospective study and meta-analysis. Neurology. 2015; 84(11): 1072-9. doi: 10.1212/WNL.0000000000001371 PMID: 25716357
64. Amagai Y, Ishikawa S, Gotoh T, Doi Y, Kayaba K, Nakamura Y, et al. Sleep duration and mortality in Japan: the Jichi Medical School Cohort Study. J Epidemiol. 2004; 14(4): 124-8. PMID: 15369129
65. Ikehara S, Iso H, Date C, Kikuchi S, Watanabe Y, Wada Y, et al. Association of sleep duration with mortality from cardiovascular disease and other causes for Japanese men and women: the JACC study. Sleep. 2009; 32(3): 295-301. PMID: 19294949
66. Kim Y, Wilkens LR, Schembre SM, Henderson BE, Kolonel LN, Goodman MT. Insufficient and excessive amounts of sleep increase the risk of premature death from cardiovascular and other diseases: the Multiethnic Cohort Study. Prev Med. 2013; 57(4): 377-85. doi: 10.1016/j.ypmed.2013.06.017 PMID: 23811525
67. Cai H, Shu XO, Xiang YB, Yang G, Li H, Ji BT, et al. Sleep duration and mortality: a prospective study of 113 138 middle-aged and elderly Chinese men and women. Sleep. 2015; 38(4): 529-36. doi: 10.5665/sleep.4564 PMID: 25348122
68. von dem Knesebeck O. [Subjective health in the elderly. Social, psychological and somatic influences]. Münster: LIT Verlag; 1998.
69. Kakizaki M, Kuriyama S, Nakaya N, Sone T, Nagai M, Sugawara Y, et al. Long sleep duration and cause-specific mortality according to physical function and self-rated health: the Ohsaki Cohort Study. J Sleep Res. 2013; 22(2): 209-16. doi: 10.1111/j.1365-2869.2012.01053.x PMID: 23005259
70. Hankerson SH, Fenton MC, Geier TJ, Keyes KM, Weissman MM, Hasin DS. Racial differences in symptoms, comorbidity, and treatment for major depressive disorder among black and white adults. J Natl Med Assoc. 2011; 103(7): 576-84. PMID: 21999032
71. Chang JJ, Salas J, Habicht K, Pien GW, Stamatakis KA, Brownson RC. The association of sleep duration and depressive symptoms in rural communities of Missouri, Tennessee, and Arkansas. J Rural Health. 2012; 28(3): 268-76. doi: 10.1111/j.1748-0361.2011.00398.x PMID: 22757951
72. Budhiraja R, Roth T, Hudgel DW, Budhiraja P, Drake CL. Prevalence and polysomnographic correlates of insomnia comorbid with medical disorders. Sleep. 2011; 34(7): 859-67. doi: 10.5665/SLEEP.1114 PMID: 21731135
73. Vgontzas AN, Fernandez-Mendoza J, Liao D, Bixler EO. Insomnia with objective short sleep duration: the most biologically severe phenotype of the disorder. Sleep Med Rev. 2013; 17(4): 241-54. doi: 10.1016/j.smrv.2012.09.005 PMID: 23419741
74. Hoevenaar-Blom MP, Spijkerman AM, Kromhout D, van den Berg JF, Verschuren WM. Sleep duration and sleep quality in relation to 12-year cardiovascular disease incidence: the MORGEN study. Sleep. 2011; 34(11): 1487-92. doi: 10.5665/sleep.1382 PMID: 22043119
75. Tourangeau R, Yan T. Sensitive questions in surveys. Psychol Bull. 2007; 133(5): 859-83. PMID: 17723033
76. Epstein JF, Barker PR, Kroutil LA. Mode effects in self-reported mental health data. Public Opinion Quarterly. 2001; 65: 529-49.
77. Busch MA, Schienkiewitz A, Nowossadeck E, Gosswald A. [Prevalence of stroke in adults aged 40 to 79 years in Germany: results of the German Health Interview and Examination Survey for Adults (DEGS1)]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2013; 56(5-6): 656-60. doi: 10.1007/s00103-012-1659-0 PMID: 23703483
78. Mallampalli MP, Carter CL. Exploring sex and gender differences in sleep health: a Society for Women's Health Research Report. J Womens Health (Larchmt). 2014; 23(7): 553-62.
79. Meisinger C, Doring A, Thorand B, Lowel H. Association of cigarette smoking and tar and nicotine intake with development of type 2 diabetes mellitus in men and women from the general population: the MONICA/KORA Augsburg Cohort Study. Diabetologia. 2006; 49(8): 1770-6. PMID: 16710672
80. German Society for General Medicine and Family Medicine (DEGAM). [Stroke - DEGAM-Guideline Number 8, S3-Guideline] [Internet]. 2012 [cited 2015 January]. Available from: http://www.degam.de/files/Inhalte/Leitlinien-Inhalte/Dokumente/DEGAM-S3-Leitlinien/LL-08-Langfassung-Schlaganfall-final5.pdf.
81. Gillum RF, Mussolino ME, Madans JH. Body fat distribution, obesity, overweight and stroke incidence in women and men-the NHANES I Epidemiologic Follow-up Study. Int J Obes Relat Metab Disord. 2001; 25(5): 628-38. PMID: 11360144
82. Bastien CH, Vallieres A, Morin CM. Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Med. 2001; 2(4): 297-307. PMID: 11438246
83. Morin C. Insomnia: psychological assessment and management. New York: Guilford Press; 1993.
84. Morin CM, Belleville G, Belanger L, Ivers H. The Insomnia Severity Index: psychometric indicators to detect insomnia cases and evaluate treatment response. Sleep. 2011; 34(5): 601-8. PMID: 21532953
85. Buysse DJ, Reynolds CF 3rd, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry Res. 1989; 28(2): 193-213. PMID: 2748771
86. Backhaus J, Junghanns K, Broocks A, Riemann D, Hohagen F. Test-retest reliability and validity of the Pittsburgh Sleep Quality Index in primary insomnia. J Psychosom Res. 2002; 53(3): 737-40. PMID: 12217446
87. Green MJ, Espie CA, Hunt K, Benzeval M. The longitudinal course of insomnia symptoms: inequalities by sex and occupational class among two different age cohorts followed for 20 years in the west of Scotland. Sleep. 2012; 35(6): 815-23. doi: 10.5665/sleep.1882 PMID: 22654201
88. Morphy H, Dunn KM, Lewis M, Boardman HF, Croft PR. Epidemiology of insomnia: a longitudinal study in a UK population. Sleep. 2007; 30(3): 274-80. PMID: 17425223
89. Morin CM, Leblanc M, Ivers H, Belanger L, Merette C, Savard J, et al. Monthly fluctuations of insomnia symptoms in a population-based sample. Sleep. 2014; 37(2): 319-26. doi: 10.5665/sleep.3406 PMID: 24497660
90. Ellis JG, Perlis ML, Bastien CH, Gardani M, Espie CA. The natural history of insomnia: acute insomnia and first-onset depression. Sleep. 2014; 37(1): 97-106. doi: 10.5665/sleep.3316 PMID: 24470699
91. Lauderdale DS, Knutson KL, Yan LL, Liu K, Rathouz PJ. Sleep duration: how well do self-reports reflect objective measures? The CARDIA Sleep Study. Epidemiology. 2008; 19(6): 838-45. doi: 10.1097/EDE.0b013e318187a7b0 PMID: 18854708
92. Valipour A. Gender-related differences in the obstructive sleep apnea syndrome. Pneumologie. 2012; 66(10): 584-8. doi: 10.1055/s-0032-1325664 PMID: 22987326
93. Phillips CL, O'Driscoll DM. Hypertension and obstructive sleep apnea. Nat Sci Sleep. 2013; 5: 43-52. doi: 10.2147/NSS.S34841 PMID: 23750107
94. Bliwise DL, King AC, Harris RB. Habitual sleep durations and health in a 50-65 year old population. J Clin Epidemiol. 1994; 47(1): 35-41. PMID: 8283193