Abstract
Background and objectives
Sleep problems and insomnia are common, challenging to treat, and transcend specific diagnoses. Although trazodone is a popular choice, robust meta-analytic evidence is lacking. This systematic review and meta-analysis investigates the efficacy and safety of trazodone for sleep disturbances, reflecting recent updates in insomnia diagnosis and treatment.
Methods
We searched Medline, Embase, APA PsycINFO, the Cochrane Central Register of Controlled Trials (CENTRAL), ClinicalTrials.gov, and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) up to 1 May 2024, for Randomized Controlled Trials (RCTs) comparing trazodone with placebo and reporting sleep-related outcomes. The minimum pharmacotherapy duration was 5 days. Included were all RCTs regardless of blinding (open-label or single- or double-blind), while quasi-randomized studies were excluded. The Cochrane Risk of Bias Tool for Randomized Trials assessed bias. Analyses used a random-effects model on an intention-to-treat (ITT) basis. Risk ratio (RR) was used for dichotomous outcomes and weighted mean difference (WMD) for continuous outcomes. When different units or scales were used, Hedge’s adjusted g standardized mean difference (SMD) was calculated. Subgroup and preplanned sensitivity analyses explored heterogeneity and evaluated findings’ strength and consistency.
Results
In total, 44 RCTs with 3935 participants were included. Trazodone did not significantly impact subjective total sleep time (TST) [WMD = 0.73 min, 95% confidence interval (CI) − 24.62; 26.07, p = 0.96] but improved sleep quality (SQ) (SMD = − 0.58, 95% CI − 0.87; − 0.28, p < 0.01) and secondary outcomes. These included the number of nocturnal awakenings (SMD = − 0.57, 95% CI − 0.85; − 0.30], p < 0.01), nocturnal time awake after sleep onset (WMD = − 13.47 min, 95% CI − 23.09; − 3.86], p < 0.01), objective TST by polysomnography (WMD = 27.98 min, 95% CI 4.02; 51.95, p = 0.02), and sleep efficiency (WMD = 3.32, 95% CI 0.53; 1.57, p = 0.02). Tolerability issues included more dropouts owing to adverse effects (RR = 2.30, 95% CI 1.45; 3.64, p < 0.01), any sleep-related adverse effects (RR = 3.67, 95% CI 1.07; 12.47, p = 0.04), more adverse effects in general (RR = 1.18, 95% CI 1.03; 1.33, p = 0.02), and more sleep-related adverse effects (RR = 4.31, 95% CI 2.29; 8.13, p < 0.01).
Conclusion
Trazodone extends total sleep time but does not affect perceived sleep duration. It may improve sleep quality and continuity but has minor effects on sleep latency, efficiency, and daytime impairment. Trazodone is associated with adverse effects, necessitating a careful risk-benefit assessment. Limited data restrict generalizability, underscoring the need for more research.
Registration
PROSPERO registration number,CRD42022383121
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References
Morin CM, Jarrin DC. Epidemiology of insomnia: prevalence, course, risk factors, and public health burden. Sleep Med Clin. 2022;17(2):173–91.
Katz DA, McHorney CA. The relationship between insomnia and health-related quality of life in patients with chronic illness. J Fam Pract. 2002;51(3):229–35.
Léger D, Guilleminault C, Bader G, Lévy E, Paillard M. Medical and socio-professional impact of insomnia. Sleep. 2002;25(6):625–9.
Fang H, Tu S, Sheng J, Shao A. Depression in sleep disturbance: a review on a bidirectional relationship, mechanisms and treatment. J Cell Mol Med. 2019;23(4):2324–32.
Wang C, Holtzman DM. Bidirectional relationship between sleep and Alzheimer’s disease: role of amyloid, tau, and other factors. Neuropsychopharmacol Off Publ Am Coll Neuropsychopharmacol. 2020;45(1):104–20.
Gottlieb DJ, Punjabi NM, Newman AB, Resnick HE, Redline S, Baldwin CM, et al. Association of sleep time with diabetes mellitus and impaired glucose tolerance. Arch Intern Med. 2005;165(8):863–7.
Meier-Ewert HK, Ridker PM, Rifai N, Regan MM, Price NJ, Dinges DF, et al. Effect of sleep loss on C-reactive protein, an inflammatory marker of cardiovascular risk. J Am Coll Cardiol. 2004;43(4):678–83.
Medic G, Wille M, Hemels ME. Short- and long-term health consequences of sleep disruption. Nat Sci Sleep. 2017;9:151–61.
Streatfeild J, Smith J, Mansfield D, Pezzullo L, Hillman D. The social and economic cost of sleep disorders. Sleep. 2021;44(11):zsab132.
Sateia MJ. International classification of sleep disorders-third edition. Chest. 2014;146(5):1387–94.
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGOlicence (CC BY-ND 3.0 IGO). https://icd.who.int/browse11.
American Psychiatric Association. Diagnostic and statistical manual of mental disorders, 5th ed. 2013. https://doi.org/10.1176/appi.books.9780890425596.
Poon SH, Quek SY, Lee TS. Insomnia disorders: nosology and classification past, present, and future. J Neuropsychiatry Clin Neurosci. 2021;33(3):194–200.
De Crescenzo F, D’Alò GL, Ostinelli EG, Ciabattini M, Di Franco V, Watanabe N, et al. Comparative effects of pharmacological interventions for the acute and long-term management of insomnia disorder in adults: a systematic review and network meta-analysis. Lancet Lond Engl. 2022;400(10347):170–84.
Edinoff AN, Nix CA, Hollier J, Sagrera CE, Delacroix BM, Abubakar T, et al. Benzodiazepines: uses, dangers, and clinical considerations. Neurol Int. 2021;13(4):594–607.
Morin CM, Inoue Y, Kushida C, Poyares D, Winkelman J, Guidelines Committee Members, et al. Endorsement of European guideline for the diagnosis and treatment of insomnia by the World Sleep Society. Sleep Med. 2021;81:124–6.
Wang S, Lan Y, Liu Z, Xu S, Wu X. Effects of different interventions on insomnia in adults: systematic review and network meta-analysis. J Psychiatr Res. 2023;165:140–9.
Juul S, Gluud C, Simonsen S, Frandsen FW, Kirsch I, Jakobsen JC. Blinding in randomised clinical trials of psychological interventions: a retrospective study of published trial reports. BMJ Evid-Based Med. 2021;26(3):109.
Pelayo R, Bertisch SM, Morin CM, Winkelman JW, Zee PC, Krystal AD. Should trazodone be first-line therapy for insomnia? A clinical suitability appraisal. J Clin Med. 2023;12(8):2933.
Teva Pharmaceuticals USA, Inc. MEDICATION GUIDE trazodone hydrochloride. (2014). Revised 12/2018. https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=b48c8d16-ad28-47f2-9a85-4ef97bdd4bfc. Accessed 23 June 2024.
Gonçalo AMG, Vieira-Coelho MA. The effects of trazodone on human cognition: a systematic review. Eur J Clin Pharmacol. 2021;77(11):1623–37.
Sateia MJ, Buysse DJ, Krystal AD, Neubauer DN, Heald JL. Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults: an American Academy of Sleep Medicine Clinical Practice Guideline. J Clin Sleep Med. 2017;13(02):307–49.
Angelini Pharma Inc. OLEPTRO (trazodone hydrochloride) extended-release tablets Initial U.S. Approval: 1981 https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/022411s008lbl.pdf. Reference ID: 3594617. Accessed 23 June 2024.
Fagiolini A, González-Pinto A, Miskowiak KW, Morgado P, Young AH, Vieta E. Role of trazodone in treatment of major depressive disorder: an update. Ann Gen Psychiatry. 2023;22(1):32.
Jaffer KY, Chang T, Vanle B, Dang J, Steiner AJ, Loera N, et al. Trazodone for insomnia: a systematic review. Innov Clin Neurosci. 2017;14(7–8):24–34.
Wichniak A, Wierzbicka AE, Jarema M. Treatment of insomnia—effect of trazodone and hypnotics on sleep. Psychiatr Pol. 2021;55(4):743–55.
Everitt H, Baldwin DS, Stuart B, Lipinska G, Mayers A, Malizia AL, et al. Antidepressants for insomnia in adults. Cochrane Database Syst Rev. 2018;5(5):CD010753.
Zheng Y, Lv T, Wu J, Lyu Y. Trazodone changed the polysomnographic sleep architecture in insomnia disorder: a systematic review and meta-analysis. Sci Rep. 2022;12(1):14453.
Yi XY, Ni SF, Ghadami MR, Meng HQ, Chen MY, Kuang L, et al. Trazodone for the treatment of insomnia: a meta-analysis of randomized placebo-controlled trials. Sleep Med. 2018;45:25–32.
Moher D. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. Ann Intern Med. 2009;151(4):264.
Johns MW. A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep. 1991;14(6):540–5.
Hoddes E, Dement WC, Zarcone V. Stanford sleepiness scale (SSS) [Database record]. APA PsycTests. 1972. https://doi.org/10.1037/t07116-000.
Reed DL, Sacco WP. Measuring sleep efficiency: what should the denominator be? J Clin Sleep Med JCSM Off Publ Am Acad Sleep Med. 2016;12(2):263–6.
Dettori JR, Norvell DC, Chapman JR. Fixed-effect vs random-effects models for meta-analysis: 3 points to consider. Glob Spine J. 2022;12(7):1624–6.
Ouzzani M, Hammady H, Fedorowicz Z, Elmagarmid A. Rayyan—a web and mobile app for systematic reviews. Syst Rev. 2016;5(1):210.
Higgins JPT, Thomas J, Chandler J, Cumpston M, Li T, Page MJ, Welch VA (editors). Cochrane handbook for systematic reviews of interventions version 6.4 (updated August 2023). Cochrane, 2023. www.training.cochrane.org/handbook.
Dong S, Schneider-Thoma J, Bighelli I, Siafis S, Wang D, Burschinski A, et al. A network meta-analysis of efficacy, acceptability, and tolerability of antipsychotics in treatment-resistant schizophrenia. Eur Arch Psychiatry Clin Neurosci. 2024;274(4):917–28.
Samara MT, Dold M, Gianatsi M, Nikolakopoulou A, Helfer B, Salanti G, et al. Efficacy, acceptability, and tolerability of antipsychotics in treatment-resistant schizophrenia: a network meta-analysis. JAMA Psychiat. 2016;73(3):199–210.
He J, Du L, Liu G, Fu J, He X, Yu J, et al. Quality assessment of reporting of randomization, allocation concealment, and blinding in traditional Chinese medicine RCTs: a review of 3159 RCTs identified from 260 systematic reviews. Trials. 2011;12(1):122.
Zhang D, Yin P, Freemantle N, Jordan R, Zhong N, Cheng KK. An assessment of the quality of randomised controlled trials conducted in China. Trials. 2008;24(9):22.
Woodhead M. 80% of China’s clinical trial data are fraudulent, investigation finds. BMJ. 2016;5(355): i5396.
Tong Z, Li F, Ogawa Y, Watanabe N, Furukawa TA. Quality of randomized controlled trials of new generation antidepressants and antipsychotics identified in the China National Knowledge Infrastructure (CNKI): a literature and telephone interview study. BMC Med Res Methodol. 2018;18(1):96.
Higgins JPT, Green S. Cochrane handbook for systematic reviews of interventions. version 5.1.0. The Cochrane Collaboration; 2011. http://handbook-5-1.cochrane.org.
Egger M, Davey Smith G, Schneider M, Minder C. Bias in meta-analysis detected by a simple, graphical test. BMJ. 1997;315(7109):629–34.
Duval S, Tweedie R. Trim and fill: a simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis. Biometrics. 2000;56(2):455–63.
Martsenkovskyi D, Napryeyenko O. P.818 Adjunctive therapy with trazodone for insomnia in adolescents with post-traumatic stress disorder and depression. Eur Neuropsychopharmacol. 2019;29:543–4.
Teri L, Logsdon RG, Peskind E, Raskind M, Weiner MF, Tractenberg RE, et al. Treatment of agitation in AD: a randomized, placebo-controlled clinical trial. Neurology. 2000;55(9):1271–8.
Camargos EF, Louzada LL, Quintas JL, Naves JOS, Louzada FM, Nóbrega OT. Trazodone improves sleep parameters in Alzheimer disease patients: a randomized, double-blind, and placebo-controlled study. Am J Geriatr Psychiatry. 2014;22(12):1565–74.
Aydin S, Odabaş O, Ercan M, Kara H, Ağargün MY. Efficacy of testosterone, trazodone and hypnotic suggestion in the treatment of non-organic male sexual dysfunction. Br J Urol. 1996;77(2):256–60.
Costabile RA, Spevak M. Oral trazodone is not effective therapy for erectile dysfunction: a double-blind, placebo controlled trial. J Urol. 1999;161(6):1819–22.
Montorsi F, Strambi LF, Guazzoni G, Galli L, Barbieri L, Rigatti P, et al. Effect of yohimbine-trazodone on psychogenic impotence: a randomized, double-blind, placebo-controlled study. Urology. 1994;44(5):732–6.
Kohmura K, Iwamoto K, Aleksic B, Sasada K, Kawano N, Katayama H, et al. Effects of sedative antidepressants on prefrontal cortex activity during verbal fluency task in healthy subjects: a near-infrared spectroscopy study. Psychopharmacology. 2013;226(1):75–81.
Kurt U, Ozkardeş H, Altuğ U, Germiyanoğlu C, Gürdal M, Erol D. The efficacy of anti-serotoninergic agents in the treatment of erectile dysfunction. J Urol. 1994;152(2 Pt 1):407–9.
Goyal P, Kattula D, Rao R, Bhad R, Mishra AK, Dhawan A. Trazodone for sleep disturbance in opioid dependent patients maintained on buprenorphine: a double blind, placebo-controlled trial. Drug Alcohol Depend. 2023;1(250): 110891.
Kaynak H, Kaynak D, Gözükirmizi E, Guilleminault C. The effects of trazodone on sleep in patients treated with stimulant antidepressants. Sleep Med. 2004;5(1):15–20.
Pope HG, Keck PE, McElroy SL, Hudson JI. A placebo-controlled study of trazodone in bulimia nervosa. J Clin Psychopharmacol. 1989;9(4):254–9.
Tammiala-Salonen T, Forssell H. Trazodone in burning mouth pain: a placebo-controlled, double-blind study. J Prosthet Dent. 1999;82(5):578. https://doi.org/10.1016/s0022-3913(99)70067-3.
Cunningham LA, Borison RL, Carman JS, Chouinard G, Crowder JE, Diamond BI, et al. A comparison of venlafaxine, trazodone, and placebo in major depression. J Clin Psychopharmacol. 1994;14(2):99–106.
Feighner JP. Trazodone in major affective disorders. Psychopathology. 1984;17(Suppl 2):15–23.
Halikas JA. Org 3770 (mirtazapine) versus trazodone: a placebo controlled trial in depressed elderly patients. Hum Psychopharmacol Clin Exp. 1995;10(S2):S125–33.
Kellams JJ, Klapper MH, Small JG. Trazodone, a new antidepressant: efficacy and safety in endogenous depression. J Clin Psychiatry. 1979;40(9):390–5.
Mann JJ, Georgotas A, Newton R, Gershon S. A controlled study of trazodone, imipramine, and placebo in outpatients with endogenous depression. J Clin Psychopharmacol. 1981;1(2):75–80.
Nierenberg AA, Adler LA, Peselow E, Zornberg G, Rosenthal M. Trazodone for antidepressant-associated insomnia. Am J Psychiatry. 1994;151(7):1069–72.
Rickels K, Case WG. Trazodone in depressed outpatients. Am J Psychiatry. 1982;139(6):803–6.
Sheehan DV, Croft HA, Gossen ER, Levitt RJ, Brullé C, Bouchard S, et al. Extended-release trazodone in major depressive disorder: a randomized, double-blind, placebo-controlled study. Psychiatry Edgmont Pa Townsh. 2009;6(5):20–33.
Zhang L, Xie WW, Li LH, Zhang HG, Wang G, Chen DC, et al. Efficacy and safety of prolonged-release trazodone in major depressive disorder: a multicenter, randomized, double-blind, flexible-dose trial. Pharmacology. 2014;94(5–6):199–206.
Friedmann PD, Rose JS, Swift R, Stout RL, Millman RP, Stein MD. Trazodone for sleep disturbance after alcohol detoxification: a double-blind, placebo-controlled trial. Alcohol Clin Exp Res. 2008;32(9):1652–60.
Le Bon O, Murphy JR, Staner L, Hoffmann G, Kormoss N, Kentos M, et al. Double-blind, placebo-controlled study of the efficacy of trazodone in alcohol post-withdrawal syndrome: polysomnographic and clinical evaluations. J Clin Psychopharmacol. 2003;23(4):377–83.
Rickels K, Schweizer E, García España F, Case G, DeMartinis N, Greenblatt D. Trazodone and valproate in patients discontinuing long-term benzodiazepine therapy: effects on withdrawal symptoms and taper outcome. Psychopharmacology. 1999;141(1):1–5.
Stein MD, Kurth ME, Sharkey KM, Anderson BJ, Corso RP, Millman RP. Trazodone for sleep disturbance during methadone maintenance: a double-blind, placebo-controlled trial. Drug Alcohol Depend. 2012;120(1–3):65–73.
Zhang HJ, Jiang XF, Ma MM, Zhang JW. Trazodone in the treatment of benzodiazepine dependence and withdrawal controlled clinical study. Chin J Contemp Neurol Neurosurg. 2013. https://doi.org/10.3969/j.issn.1672.
Haffmans P, Vos M. The effects of trazodone on sleep disturbances induced by brofaromine. Eur Psychiatry. 1999;14(3):167–71.
Roth AJ, McCALL WV, Liguori A. Cognitive, psychomotor and polysomnographic effects of trazodone in primary insomniacs: trazodone impairments in insomniacs. J Sleep Res. 2011;20(4):552–8.
Shell WE, May LA, Bullias DH, Pavlik SL, Silver DS. Sentra PM (a medical food) and trazodone in the management of sleep disorders. J Cent Nerv Syst Dis. 2012;4:65–72. https://doi.org/10.4137/JCNSD.S9381. (Published 2012 Apr 23).
Walsh JK, Erman MK, Erwin CW, Jamieson AO, Mahowald MW, Regestein QR, Scharf MB, Tigel PD, Vogel GW, Ware JC. Subjective hypnotic efficacy of trazodone and zolpidem in DSMIII-R primary insomnia. Hum Psychopharmacol Clin Exp. 1998;13(3):191–8. https://doi.org/10.1002/(sici)1099-1077(199804)13:3.
Lebert F, Stekke W, Hasenbroekx C, Pasquier F. Frontotemporal dementia: a randomised, controlled trial with trazodone. Dement Geriatr Cogn Disord. 2004;17(4):355–9.
Bueno JR, Caldeira MV, Rocha AV, Mundim FD. Anti-anxiety effects of trazodone (a double blind study with diazepam and placebo). Rev Bras Med. 1976;33(2):BLL01009222596.
Rickels K. Antidepressants for the treatment of generalized anxiety disorder: a placebo-controlled comparison of imipramine, trazodone, and diazepam. Arch Gen Psychiatry. 1993;50(11):884.
Davidoff G, Guarracini M, Roth E, Sliwa J, Yarkony G. Trazodone hydrochloride in the treatment of dysesthetic pain in traumatic myelopathy: a randomized, double-blind, placebo-controlled study. Pain. 1987;29(2):151–61.
Lipone P, Ehler E, Nastaj M, Palka-Kisielowska I, Cruccu G, Truini A, et al. Efficacy and safety of low doses of trazodone in patients affected by painful diabetic neuropathy and treated with gabapentin: a randomized controlled pilot study. CNS Drugs. 2020;34(11):1177–89.
Hayashi T, Yokota N, Takahashi T, Tawara Y, Nishikawa T, Yano T, et al. Benefits of trazodone and mianserin for patients with late-life chronic schizophrenia and tardive dyskinesia: an add-on, double-blind, placebo-controlled study. Int Clin Psychopharmacol. 1997;12(4):199–206.
Lehmann HE, Ban TA. A placebo-controlled clinical study with trazodone in schizophrenic patients. Psychopharmacol Bull. 1977;13(3):11–2.
Singh AN, Saxenna B, Nelson HL. A controlled clinical study of trazodone in chronic schizophrenic patients with pronounced depressive symptomatology. Curr Ther Res. 1977;23(4):BLL01012432636.
Cleeves L, Findley LJ. Trazodone is ineffective in essential tremor. J Neurol Neurosurg Psychiatry. 1990;53(3):268–9.
Dib GC, Kasse CA, De Andrade TA, Gurgel Testa JR, Cruz OLM. Tinnitus treatment with trazodone. Braz J Otorhinolaryngol. 2007;73(3):390–7.
Frank RG, Kashani JH, Parker JC, Beck NC, Brownlee-Duffeck M, Elliott TR, et al. Antidepressant analgesia in rheumatoid arthritis. J Rheumatol. 1988;15(11):1632–8.
Clouse RE, Lustman PJ, Eckert TC, Ferney DM, Griffith LS. Low-dose trazodone for symptomatic patients with esophageal contraction abnormalities. Gastroenterology. 1987;92(4):1027–36.
Pigott TA, L’Heureux F, Rubenstein CS, Bernstein SE, Hill JL, Murphy DL. A double-blind, placebo controlled study of trazodone in patients with obsessive-compulsive disorder. J Clin Psychopharmacol. 1992;12(3):156–62.
Wang J, Liu S, Zhao C, Han H, Chen X, Tao J, et al. Effects of trazodone on sleep quality and cognitive function in arteriosclerotic cerebral small vessel disease comorbid with chronic insomnia. Front Psychiatry. 2020;30(11):620.
Bossini L, Casolaro I, Koukouna D, Cecchini F, Fagiolini A. Off-label uses of trazodone: a review. Expert Opin Pharmacother. 2012;13(12):1707–17.
Bossini L, Coluccia A, Casolaro I, Benbow J, Amodeo G, De Giorgi R, et al. Off-Label trazodone prescription: evidence, benefits and risks. Curr Pharm Des. 2015;21(23):3343–51.
Ramlee F, Sanborn AN, Tang NKY. What sways people’s judgement of sleep quality? A quantitative choice-making study with good and poor sleepers. Sleep. 2017. https://doi.org/10.1093/sleep/zsx091.
Tang NKY, Banks PDW, Sanborn AN. Judgement of sleep quality of the previous night changes as the day unfolds: a prospective experience sampling study. J Sleep Res. 2023;32(3): e13764.
Jackson CL, Patel SR, Jackson WB, Lutsey PL, Redline S. Agreement between self-reported and objectively measured sleep duration among white, black, Hispanic, and Chinese adults in the United States: multi-Ethnic Study of Atherosclerosis. Sleep. 2018;41(6):zsy57.
Carskadon MA, Dement WC, Mitler MM, Guilleminault C, Zarcone VP, Spiegel R. Self-reports versus sleep laboratory findings in 122 drug-free subjects with complaints of chronic insomnia. Am J Psychiatry. 1976;133(12):1382–8.
Lauderdale DS, Knutson KL, Yan LL, Liu K, Rathouz PJ. Self-reported and measured sleep duration: how similar are they? Epidemiol Camb Mass. 2008;19(6):838–45.
Matthews KA, Patel SR, Pantesco EJ, Buysse DJ, Kamarck TW, Lee L, et al. Similarities and differences in estimates of sleep duration by polysomnography, actigraphy, diary, and self-reported habitual sleep in a community sample. Sleep Health. 2018;4(1):96–103.
Bianchi MT, Williams KL, McKinney S, Ellenbogen JM. The subjective-objective mismatch in sleep perception among those with insomnia and sleep apnea. J Sleep Res. 2013;22(5):557–68.
Ohayon M, Wickwire EM, Hirshkowitz M, Albert SM, Avidan A, Daly FJ, et al. National Sleep Foundation’s sleep quality recommendations: first report. Sleep Health. 2017;3(1):6–19.
Nelson KL, Davis JE, Corbett CF. Sleep quality: an evolutionary concept analysis. Nurs Forum (Auckl). 2022;57(1):144–51.
Harvey AG, Stinson K, Whitaker KL, Moskovitz D, Virk H. The subjective meaning of sleep quality: a comparison of individuals with and without insomnia. Sleep. 2008;31(3):383–93.
Trikalinos TA, Churchill R, Ferri M, Leucht S, Tuunainen A, Wahlbeck K, et al. Effect sizes in cumulative meta-analyses of mental health randomized trials evolved over time. J Clin Epidemiol. 2004;57(11):1124–30.
La AL, Walsh CM, Neylan TC, Vossel KA, Yaffe K, Krystal AD, et al. Long-term trazodone use and cognition: a potential therapeutic role for slow-wave sleep enhancers. J Alzheimers Dis. 2019;67(3):911–21.
Zhou M, Tang S. Effect of a dual orexin receptor antagonist on Alzheimer’s disease: sleep disorders and cognition. Front Med. 2022;9: 984227.
Fan J, Liu X, Li Y, Xia H, Yang R, Li J, et al. Quality problems of clinical trials in China: evidence from quality related studies. Trials. 2022;23(1):343.
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Kokkali, M., Pinioti, E., Lappas, A.S. et al. Effects of Trazodone on Sleep: A Systematic Review and Meta-analysis. CNS Drugs 38, 753–769 (2024). https://doi.org/10.1007/s40263-024-01110-2
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DOI: https://doi.org/10.1007/s40263-024-01110-2