Relationship, differences, and agreement between objective and subjective sleep measures in chronic spinal pain patients with comorbid insomnia: a cross-sectional study.
Bilterys, Thomas; Van Looveren, Eveline; Malfliet, Anneleenet al.
Anesthesiology and Pain Medicine; Neurology (clinical); Neurology
Abstract :
[en] Sleep disturbances are one of the most frequent reported problems in people with nonspecific chronic spinal pain (nCSP) and presents an additional treatment challenge. Interventions targeting sleep problems are mainly based on subjective sleep complaints and do not take objective sleep into consideration. The aim of this cross-sectional study was to evaluate the relationship and conformity between self-reported and objectively measured sleep parameters (ie, questionnaire vs polysomnography and actigraphy). The baseline data of 123 people with nCSP and comorbid insomnia who are participating in a randomized controlled trial were analyzed. Pearson correlations were used to investigate the relationship between objective and subjective sleep parameters. Differences between objective and subjective sleep parameters were analyzed using t tests. Bland-Altman analyses were performed to quantify and visualize agreement between the different measurement methods. Except for the significant moderate correlation between perceived time in bed (TIB) and actigraphic TIB (r = 0.667, P < 0.001), all other associations between subjective and objective measures were rather weak (r < 0.400). Participants underestimated their total sleep time (TST) (mean difference [MD] = -52.37 [-67.94, -36.81], P < 0.001) and overestimated sleep onset latency (SOL) (MD = 13.76 [8.33, 19.20], P < 0.001) in general. The results of this study suggest a discrepancy (differences and lack of agreement) between subjective and objective sleep parameters in people with nCSP and comorbid insomnia. No or weak associations were found between self-reported sleep and objectively measured sleep. Findings suggest that people with nCSP and comorbid insomnia tend to underestimate TST and overestimate SOL. Future studies are necessary to confirm our results.
Disciplines :
Orthopedics, rehabilitation & sports medicine
Author, co-author :
Bilterys, Thomas ; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Department of Rehabilitation Sciences, Faculty of Medicine & Health Sciences, Ghent University, Ghent, Belgium ; Pain in Motion International Research Group
Van Looveren, Eveline ; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Department of Rehabilitation Sciences, Faculty of Medicine & Health Sciences, Ghent University, Ghent, Belgium ; Pain in Motion International Research Group
Malfliet, Anneleen ; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Pain in Motion International Research Group ; Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium ; Research Foundation Flanders (FWO), Brussels, Belgium
Nijs, Jo; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Pain in Motion International Research Group ; Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium ; Department of Health and Rehabilitation, Unit of Physiotherapy, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
Meeus, Mira ; Department of Rehabilitation Sciences, Faculty of Medicine & Health Sciences, Ghent University, Ghent, Belgium ; Pain in Motion International Research Group ; Department of Rehabilitation Sciences and Physiotherapy (MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
Danneels, Lieven ; Department of Rehabilitation Sciences, Faculty of Medicine & Health Sciences, Ghent University, Ghent, Belgium
Ickmans, Kelly ; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Pain in Motion International Research Group ; Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Brussels, Belgium ; Movement & Nutrition for Health & Performance Research Group (MOVE), Department of Movement and Sport Sciences, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium
Cagnie, Barbara ; Department of Rehabilitation Sciences, Faculty of Medicine & Health Sciences, Ghent University, Ghent, Belgium
Goubert, Dorien ; Department of Rehabilitation Sciences, Faculty of Medicine & Health Sciences, Ghent University, Ghent, Belgium
Moens, Maarten ; Pain in Motion International Research Group ; Department of Neurosurgery and Radiology, University Hospital Brussels, Brussels, Belgium ; Center for Neuroscience, Vrije Universiteit Brussel, Brussels, Belgium ; Stimulus Research Group, Vrije Universiteit Brussel, Brussels, Belgium
De Baets, Liesbet ; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Pain in Motion International Research Group
Munneke, Wouter ; Université de Liège - ULiège > Evaluation-Revalidation (EVAREVA) ; Pain in Motion Research Group (PAIN), Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium ; Pain in Motion International Research Group
Mairesse, Olivier ; Brain, Body and Cognition, Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium ; Sleep Laboratory and Unit for Clinical Chronobiology, Brugmann University Hospital, Brussels, Belgium
Relationship, differences, and agreement between objective and subjective sleep measures in chronic spinal pain patients with comorbid insomnia: a cross-sectional study.
Publication date :
06 April 2023
Journal title :
Pain
ISSN :
0304-3959
eISSN :
1872-6623
Publisher :
Ovid Technologies (Wolters Kluwer Health), United States
Aili K, Åström-Paulsson S, Stoetzer U, Svartengren M, Hillert L,. Reliability of actigraphy and subjective sleep measurements in adults: the design of sleep assessments. J Clin Sleep Med 2017; 13: 39-47.
Alsaadi SM, McAuley JH, Hush JM, Lo S, Bartlett DJ, Grunstein RR, Maher CG,. The bidirectional relationship between pain intensity and sleep disturbance/quality in patients with low back pain. Clin J Pain 2014; 30: 755-65.
Alsaadi SM, McAuley JH, Hush JM, Maher CG,. Prevalence of sleep disturbance in patients with low back pain. Eur Spine J 2011; 20: 737-43.
American Psychiatric Association. Diagnostic and statistical manual of mental disorders, Fifth Edition. Arlington, VA: American Psychiatric Association, 2013.
Ancoli-Israel S, Martin JL, Blackwell T, Buenaver L, Liu L, Meltzer LJ, Sadeh A, Spira AP, Taylor DJ,. The SBSM guide to actigraphy monitoring: clinical and research applications. Behav Sleep Med 2015; 13: S4-38.
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 Psychosomatic Res 2002; 53: 737-40.
Bahouq H, Allali F, Rkain H, Hmamouchi I, Hajjaj-Hassouni N,. Prevalence and severity of insomnia in chronic low back pain patients. Rheumatol Int 2013; 33: 1277-81.
Berger AM, Wielgus KK, Young-McCaughan S, Fischer P, Farr L, Lee KA,. Methodological challenges when using actigraphy in research. J Pain Symptom Manage 2008; 36: 191-9.
Berry R, Brooks R, Charlene G, Harding S, Lloyd R, Quan S, Troester M, Vaughn B,. The AASM manual for the scoring of sleep and associated events: rules, terminology and technical specifications. Darien, IL: American Academy of Sleep Medicine, 2017.
Bianchi MT, Wang W, Klerman EB,. Sleep misperception in healthy adults: implications for insomnia diagnosis. J Clin Sleep Med 2012; 08: 547-54.
Bilterys T, Siffain C, De Maeyer I, Van Looveren E, Mairesse O, Nijs J, Meeus M, Ickmans K, Cagnie B, Goubert D, Danneels L, Moens M, Malfliet A,. Associates of insomnia in people with chronic spinal pain: a systematic review and meta-analysis. J Clin Med 2021; 10: 3175.
Bonvanie IJ, Oldehinkel AJ, Rosmalen JGM, Janssens KAM,. Sleep problems and pain: a longitudinal cohort study in emerging adults. PAIN 2016; 157: 957-63.
Bruyneel M, Libert W, Ameye L, Ninane V,. Comparison between home and hospital set-up for unattended home-based polysomnography: a prospective randomized study. Sleep Med 2015; 16: 1434-8.
Buckelmüller J, Landolt HP, Stassen HH, Achermann P,. Trait-like individual differences in the human sleep electroencephalogram. Neuroscience 2006; 138: 351-6.
Buysse DJ, Reynolds CF III, Monk TH, Berman SR, Kupfer DJ,. The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry Res 1989; 28: 193-213.
Castelnovo A, Ferri R, Punjabi NM, Castronovo V, Garbazza C, Zucconi M, Ferini-Strambi L, Manconi M,. The paradox of paradoxical insomnia: a theoretical review towards a unifying evidence-based definition. Sleep Med Rev 2019; 44: 70-82.
Crönlein T, Lehner A, Schüssler P, Geisler P, Rupprecht R, Wetter TC,. Changes in subjective-objective sleep discrepancy following inpatient cognitive behavior therapy for insomnia. Behav Ther 2019; 50: 994-1001.
Dillon HR, Lichstein KL, Dautovich ND, Taylor DJ, Riedel BW, Bush AJ,. Variability in self-reported normal sleep across the adult age span. J Gerontol B Psychol Sci Soc Sci 2015; 70: 46-56.
Eadie J, van de Water AT, Lonsdale C, Tully MA, van Mechelen W, Boreham CA, Daly L, McDonough SM, Hurley DA,. Physiotherapy for sleep disturbance in people with chronic low back pain: results of a feasibility randomized controlled trial. Arch Phys Med Rehabil 2013; 94: 2083-92.
Edinger JD, Krystal AD,. Subtyping primary insomnia: is sleep state misperception a distinct clinical entity? Sleep Med Rev 2003; 7: 203-14.
Fejer R, Kyvik KO, Hartvigsen J,. The prevalence of neck pain in the world population: a systematic critical review of the literature. Eur Spine J 2006; 15: 834-48.
Fekedulegn D, Andrew ME, Shi M, Violanti JM, Knox S, Innes KE,. Actigraphy-based assessment of sleep parameters. Ann Work Expo Health 2020; 64: 350-67.
Giavarina D,. Understanding Bland altman analysis. Biochemia Med 2015; 25: 141-51.
Gore M, Tai KS, Sadosky A, Leslie D, Stacey BR,. Use and costs of prescription medications and alternative treatments in patients with osteoarthritis and chronic low back pain in community-based settings. Pain Pract 2012; 12: 550-60.
Harvey AG, Tang NKY,. (Mis)perception of sleep in insomnia: a puzzle and a resolution. Psychol Bull 2012; 138: 77-101.
Hauri PJ, Olmstead EM,. Reverse first night effect in insomnia. Sleep 1989; 12: 97-105.
Herrero Babiloni A, De Koninck BP, Beetz G, De Beaumont L, Martel MO, Lavigne GJ,. Sleep and pain: recent insights, mechanisms, and future directions in the investigation of this relationship. J Neural Transm (Vienna) 2020; 127: 647-60.
Hoaglin DC, Iglewicz B,. Fine-tuning some resistant rules for outlier labeling. J Am Stat Assoc 1987; 82: 1147-9.
Hoy D, Bain C, Williams G, March L, Brooks P, Blyth F, Woolf A, Vos T, Buchbinder R,. A systematic review of the global prevalence of low back pain. Arthritis Rheum 2012; 64: 2028-37.
Ibáñez V, Silva J, Cauli O,. A survey on sleep assessment methods. PeerJ 2018; 6: e4849.
Jank R, Gallee A, Boeckle M, Fiegl S, Pieh C,. Chronic pain and sleep disorders in primary care. Pain Res Treat 2017; 2017: 9081802.
Janků K, Šmotek M, Fárková E, Kopřivová J,. Subjective-objective sleep discrepancy in patients with insomnia during and after cognitive behavioural therapy: an actigraphy study. J Sleep Res 2020; 29: e13064.
Kelly GA, Blake C, Power CK, O'Keeffe D, Fullen BM,. The association between chronic low back pain and sleep: a systematic review. Clin J Pain 2011; 27: 169-81.
Kelly RM, McDermott JH, Coogan AN,. Differences in sleep offset timing between weekdays and weekends in 79,161 adult participants in the UK biobank. Clocks Sleep 2022; 4: 658-74.
Lee YJ, Lee JY, Cho JH, Choi JH,. Inter-rater reliability of sleep stage scoring: a meta-analysis. J Clin Sleep Med 2022; 18: 193-202.
Mairesse O, MacDonald-Nethercott E, Neu D, Tellez HF, Dessy E, Neyt X, Meeusen R, Pattyn N,. Preparing for Mars: human sleep and performance during a 13 month stay in Antarctica. Sleep 2019; 42. doi: 10.1093/sleep/zsy206
Malfliet A, Bilterys T, Van Looveren E, Meeus M, Danneels L, Ickmans K, Cagnie B, Mairesse O, Neu D, Moens M, Goubert D, Kamper SJ, Nijs J,. The added value of cognitive behavioral therapy for insomnia to current best evidence physical therapy for chronic spinal pain: protocol of a randomized controlled clinical trial. Braz J Phys Ther 2019; 23: 62-70.
Mathias JL, Cant ML, Burke ALJ,. Sleep disturbances and sleep disorders in adults living with chronic pain: a meta-analysis. Sleep Med 2018; 52: 198-210.
Mitchell LJ, Bisdounis L, Ballesio A, Omlin X, Kyle SD,. The impact of cognitive behavioural therapy for insomnia on objective sleep parameters: a meta-analysis and systematic review. Sleep Med Rev 2019; 47: 90-102.
Mollayeva T, Thurairajah P, Burton K, Mollayeva S, Shapiro CM, Colantonio A,. The Pittsburgh sleep quality index as a screening tool for sleep dysfunction in clinical and non-clinical samples: a systematic review and meta-analysis. Sleep Med Rev 2016; 25: 52-73.
Murray CJ, Lopez AD,. Measuring the global burden of disease. N Engl J Med 2013; 369: 448-57.
Murray CJ, Vos T, Lozano R, Naghavi M, Flaxman AD, Michaud C, Ezzati M, Shibuya K, Salomon JA, Abdalla S, Aboyans V, Abraham J, Ackerman I, Aggarwal R, Ahn SY, Ali MK, Alvarado M, Anderson HR, Anderson LM, Andrews KG, Atkinson C, Baddour LM, Bahalim AN, Barker-Collo S, Barrero LH, Bartels DH, Basanez MG, Baxter A, Bell ML, Benjamin EJ, Bennett D, Bernabe E, Bhalla K, Bhandari B, Bikbov B, Bin Abdulhak A, Birbeck G, Black JA, Blencowe H, Blore JD, Blyth F, Bolliger I, Bonaventure A, Boufous S, Bourne R, Boussinesq M, Braithwaite T, Brayne C, Bridgett L, Brooker S, Brooks P, Brugha TS, Bryan-Hancock C, Bucello C, Buchbinder R, Buckle G, Budke CM, Burch M, Burney P, Burstein R, Calabria B, Campbell B, Canter CE, Carabin H, Carapetis J, Carmona L, Cella C, Charlson F, Chen H, Cheng AT, Chou D, Chugh SS, Coffeng LE, Colan SD, Colquhoun S, Colson KE, Condon J, Connor MD, Cooper LT, Corriere M, Cortinovis M, de Vaccaro KC, Couser W, Cowie BC, Criqui MH, Cross M, Dabhadkar KC, Dahiya M, Dahodwala N, Damsere-Derry J, Danaei G, Davis A, De Leo D, Degenhardt L, Dellavalle R, Delossantos A, Denenberg J, Derrett S, Des Jarlais DC, Dharmaratne SD, Dherani M, Diaz-Torne C, Dolk H, Dorsey ER, Driscoll T, Duber H, Ebel B, Edmond K, Elbaz A, Ali SE, Erskine H, Erwin PJ, Espindola P, Ewoigbokhan SE, Farzadfar F, Feigin V, Felson DT, Ferrari A, Ferri CP, Fevre EM, Finucane MM, Flaxman S, Flood L, Foreman K, Forouzanfar MH, Fowkes FG, Fransen M, Freeman MK, Gabbe BJ, Gabriel SE, Gakidou E, Ganatra HA, Garcia B, Gaspari F, Gillum RF, Gmel G, Gonzalez-Medina D, Gosselin R, Grainger R, Grant B, Groeger J, Guillemin F, Gunnell D, Gupta R, Haagsma J, Hagan H, Halasa YA, Hall W, Haring D, Haro JM, Harrison JE, Havmoeller R, Hay RJ, Higashi H, Hill C, Hoen B, Hoffman H, Hotez PJ, Hoy D, Huang JJ, Ibeanusi SE, Jacobsen KH, James SL, Jarvis D, Jasrasaria R, Jayaraman S, Johns N, Jonas JB, Karthikeyan G, Kassebaum N, Kawakami N, Keren A, Khoo JP, King CH, Knowlton LM, Kobusingye O, Koranteng A, Krishnamurthi R, Laden F, Lalloo R, Laslett LL, Lathlean T, Leasher JL, Lee YY, Leigh J, Levinson D, Lim SS, Limb E, Lin JK, Lipnick M, Lipshultz SE, Liu W, Loane M, Ohno SL, Lyons R, Mabweijano J, MacIntyre MF, Malekzadeh R, Mallinger L, Manivannan S, Marcenes W, March L, Margolis DJ, Marks GB, Marks R, Matsumori A, Matzopoulos R, Mayosi BM, McAnulty JH, McDermott MM, McGill N, McGrath J, Medina-Mora ME, Meltzer M, Mensah GA, Merriman TR, Meyer AC, Miglioli V, Miller M, Miller TR, Mitchell PB, Mock C, Mocumbi AO, Moffitt TE, Mokdad AA, Monasta L, Montico M, Moradi-Lakeh M, Moran A, Morawska L, Mori R, Murdoch ME, Mwaniki MK, Naidoo K, Nair MN, Naldi L, Narayan KM, Nelson PK, Nelson RG, Nevitt MC, Newton CR, Nolte S, Norman P, Norman R, O'Donnell M, O'Hanlon S, Olives C, Omer SB, Ortblad K, Osborne R, Ozgediz D, Page A, Pahari B, Pandian JD, Rivero AP, Patten SB, Pearce N, Padilla RP, Perez-Ruiz F, Perico N, Pesudovs K, Phillips D, Phillips MR, Pierce K, Pion S, Polanczyk GV, Polinder S, Pope CA III, Popova S, Porrini E, Pourmalek F, Prince M, Pullan RL, Ramaiah KD, Ranganathan D, Razavi H, Regan M, Rehm JT, Rein DB, Remuzzi G, Richardson K, Rivara FP, Roberts T, Robinson C, De Leon FR, Ronfani L, Room R, Rosenfeld LC, Rushton L, Sacco RL, Saha S, Sampson U, Sanchez-Riera L, Sanman E, Schwebel DC, Scott JG, Segui-Gomez M, Shahraz S, Shepard DS, Shin H, Shivakoti R, Singh D, Singh GM, Singh JA, Singleton J, Sleet DA, Sliwa K, Smith E, Smith JL, Stapelberg NJ, Steer A, Steiner T, Stolk WA, Stovner LJ, Sudfeld C, Syed S, Tamburlini G, Tavakkoli M, Taylor HR, Taylor JA, Taylor WJ, Thomas B, Thomson WM, Thurston GD, Tleyjeh IM, Tonelli M, Towbin JA, Truelsen T, Tsilimbaris MK, Ubeda C, Undurraga EA, van der Werf MJ, van Os J, Vavilala MS, Venketasubramanian N, Wang M, Wang W, Watt K, Weatherall DJ, Weinstock MA, Weintraub R, Weisskopf MG, Weissman MM, White RA, Whiteford H, Wiebe N, Wiersma ST, Wilkinson JD, Williams HC, Williams SR, Witt E, Wolfe F, Woolf AD, Wulf S, Yeh PH, Zaidi AK, Zheng ZJ, Zonies D, Lopez AD, AlMazroa MA, Memish ZA,. Disability-adjusted life years (DALYs) for 291 diseases and injuries in 21 regions, 1990-2010: a systematic analysis for the Global Burden of Disease Study 2010. Lancet 2012; 380: 2197-223.
Nilius G, Domanski U, Schroeder M, Franke KJ, Hogrebe A, Margarit L, Stoica M, d'Ortho MP,. A randomized controlled trial to validate the Alice PDX ambulatory device. Nat Sci Sleep 2017; 9: 171-80.
O'Donoghue GM, Fox N, Heneghan C, Hurley DA,. Objective and subjective assessment of sleep in chronic low back pain patients compared with healthy age and gender matched controls: a pilot study. BMC Musculoskelet Disord 2009; 10: 122.
Olfson M, Wall M, Liu SM, Morin CM, Blanco C,. Insomnia and impaired quality of life in the United States. J Clin Psychiatry 2018; 79: 17m12020.
Purushothaman B, Singh A, Lingutla K, Bhatia C, Pollock R, Krishna M,. Prevalence of insomnia in patients with chronic back pain. J Orthop Surg (Hong Kong) 2013; 21: 68-70.
Rezaie L, Fobian AD, McCall WV, Khazaie H,. Paradoxical insomnia and subjective-objective sleep discrepancy: a review. Sleep Med Rev 2018; 40: 196-202.
Rusterholz T, Tarokh L, Van Dongen HPA, Achermann P,. Interindividual differences in the dynamics of the homeostatic process are trait-like and distinct for sleep versus wakefulness. J Sleep Res 2017; 26: 171-8.
Sadeh A,. The role and validity of actigraphy in sleep medicine: an update. Sleep Med Rev 2011; 15: 259-67.
Selvanathan J, Pham C, Nagappa M, Peng PWH, Englesakis M, Espie CA, Morin CM, Chung F,. Cognitive behavioral therapy for insomnia in patients with chronic pain-a systematic review and meta-analysis of randomized controlled trials. Sleep Med Rev 2021; 60: 101460.
Smith MT, McCrae CS, Cheung J, Martin JL, Harrod CG, Heald JL, Carden KA,. Use of actigraphy for the evaluation of sleep disorders and circadian rhythm sleep-wake disorders: an American Academy of Sleep Medicine Systematic Review, meta-analysis, and GRADE assessment. J Clin Sleep Med 2018; 14: 1209-30.
Spielman AJ, Yang C-M, Glovinsky PB,. Chapter 1-sleep restriction therapy. In: Perlis M, Aloia M, Kuhn B, editors. Behavioral treatments for sleep disorders. San Diego: Academic Press, 2011. p. 9-19.
Sribastav SS, Peiheng H, Jun L, Zemin L, Fuxin W, Jianru W, Hui L, Hua W, Zhaomin Z,. Interplay among pain intensity, sleep disturbance and emotion in patients with non-specific low back pain. PeerJ 2017; 5: e3282.
St-Jean G, Turcotte I, Bastien CH,. Cerebral asymmetry in insomnia sufferers. Front Neurol 2012; 3: 47.
Stone JD, Rentz LE, Forsey J, Ramadan J, Markwald RR, Finomore VS, Galster SM, Rezai A, Hagen JA,. Evaluations of commercial sleep technologies for objective monitoring during routine sleeping conditions. Nat Sci Sleep 2020; 12: 821-42.
Tang NKY,. Insomnia Co-occurring with chronic pain: clinical features, interaction, assessments and possible interventions. Rev Pain 2008; 2: 2-7.
Tang NK, Harvey AG,. Correcting distorted perception of sleep in insomnia: a novel behavioural experiment? Behav Res Ther 2004; 42: 27-39.
Tang NKY, Wright KJ, Salkovskis PM,. Prevalence and correlates of clinical insomnia co-occurring with chronic back pain. J Sleep Res 2007; 16: 85-95.
Trauer JM, Qian MY, Doyle JS, Rajaratnam SM, Cunnington D,. Cognitive behavioral therapy for chronic insomnia: a systematic review and meta-analysis. Ann Intern Med 2015; 163: 191-204.
Trimmel K, Eder HG, Böck M, Stefanic-Kejik A, Klösch G, Seidel S,. The (mis)perception of sleep: factors influencing the discrepancy between self-reported and objective sleep parameters. J Clin Sleep Med 2021; 17: 917-24.
Tucker AM, Dinges DF, Van Dongen HPA,. Trait interindividual differences in the sleep physiology of healthy young adults. J Sleep Res 2007; 16: 170-80.
van de Water AT, Eadie J, Hurley DA,. Investigation of sleep disturbance in chronic low back pain: an age-and gender-matched case-control study over a 7-night period. Man Ther 2011; 16: 550-6.
Van De Water ATM, Holmes A, Hurley DA,. Objective measurements of sleep for non-laboratory settings as alternatives to polysomnography-a systematic review. J Sleep Res 2011; 20: 183-200.
Van Looveren E, Bilterys T, Munneke W, Cagnie B, Ickmans K, Mairesse O, Malfliet A, De Baets L, Nijs J, Goubert D, Danneels L, Moens M, Meeus M,. The association between sleep and chronic spinal pain: a systematic review from the last decade. J Clin Med 2021; 10: 3836.