ORCID ID
Hazhmat Ali: 0000-0002-2553-8443
Dildar Haji Musa: 0000-0003-4319-9999
Ary Habeeb Mohammed: 0009-0003-2036-1698
Hiwa Abdulraheem: 0009-0009-6671-435X
Sherzad Salahadeen: 0009-0009-7901-6446
Alind Mustafa: 0009-0004-7338-5914
Abstract
Background: Students often exhibit irregular sleep patterns due to rigorous academic workloads, which exert a considerable negative impact on their mental health. The present study aims to investigate the influence of irregular sleep on academic performance.
Methods: This study recruited a cohort of 409 medical students of both genders. Upon their consent, participants filled out a closed-ended questionnaire on various sleep parameters, including sleep habits, duration, and environment.
Results: Students with irregular sleep patterns reported higher rates of sleep deprivation, late sleep onset, and troubled sleep. Moreover, they spent a longer duration using smart devices before bedtime and experienced higher levels of stress. Irregular sleep demonstrated a positive correlation with sleep deprivation, sleep duration, troubled sleep, and the duration of smart device use (p = 0.000), energy drink consumption (p = 0.040), and junk-food intake (p = 0.000). Students exhibited poor academic performance, frequently experienced fatigue, and were unfocused. Irregular sleep was positively correlated with overall academic performance (p = 0.002), fatigue, and focus in class (p = 0.000).
Conclusion: The findings indicate a significant impact of irregular sleep on learning outcomes and mental health among medical students. Thus, effective strategies are critically required to enhance sleep within this population.
References
- Meyer N, Harvey AG, Lockley SW, Dijk DJ. Circadian rhythms and disorders of the timing of sleep. Lancet. 2022;400:1061–78.
- Cai H, Guo J, Zhou J, Lai Y. Psychological resilience mediates the association between sleep quality and anxiety symptoms: A repeated measures study in college students. PLoS One. 2023;18:e0292887.
- Kassaw C, Demareva V, Negash M, Sime Y. Psychosocial determinants of academic achievement in Ethiopian higher education students, 2024. Systematic review and meta-analysis. Heliyon. 2024;10:e36465.
- Wang F, Bíró É. Determinants of sleep quality in college students: A literature review. Explore. 2021;17:170–7.
- Omichi C, Koyama T, Kadotani H, Ozaki E, Tomida S, Yoshida T, et al. Irregular sleep and all-cause mortality: A large prospective cohort study. Sleep Health. 2022;8:678–83.
- Busa F, Csima MP, Márton JA, Rozmann N, Pandur AA, Ferkai LA, et al. Sleep quality and perceived stress among health science students during online education-a single institution study. Healthcare. 2023;12:75.
- Zitser J, Allen IE, Falgàs N, Le MM, Neylan TC, Kramer JH, et al. Pittsburgh Sleep Quality Index (PSQI) responses are modulated by total sleep time and wake after sleep onset in healthy older adults. PLoS One. 2022;17:e0270095.
- Baranwal N, Yu PK, Siegel NS. Sleep physiology, pathophysiology, and sleep hygiene. Prog Cardiovasc Dis. 2023;77:59–69.
- Friedrich A, Schlarb AA. Let's talk about sleep: A systematic review of psychological interventions to improve sleep in college students. J Sleep Res. 2018;27:4–22.
- Lund HG, Reider BD, Whiting AB, Prichard JR. Sleep patterns and predictors of disturbed sleep in a large population of college students. J Adolesc Health. 2010;46:124–32.
- Solanki S, Venkiteswaran A, Saravanabawan P. Prevalence of insomnia and factors influencing its incidence in students of Tbilisi State Medical University: A cross-sectional study. Cureus. 2023;15:e46084.
- Abedalqader F, Alhuarrat MA, Ibrahim G, Taha F, Al Tamimi A, Shukur M, et al. The correlation between smart device usage & sleep quality among UAE residents. Sleep Med. 2019;63:18–23.
- Abrantes LCS, de Souza de Morais N, Gonçalves VSS, Ribeiro SAV, de Oliveira Sediyama CMN, do Carmo Castro Franceschini S, et al. Physical activity and quality of life among college students without comorbidities for cardiometabolic diseases: Systematic review and meta-analysis. Qual Life Res. 2022;31:1933–62.
- Schmickler JM, Blaschke S, Robbins R, Mess F. Determinants of sleep quality: A cross-sectional study in University students. Int J Environ Res Public Health. 2023;20:2019.
- Ge Y, Xin S, Luan D, Zou Z, Liu M, Bai X, et al. Association of physical activity, sedentary time, and sleep duration on the health-related quality of life of college students in Northeast China. Health Qual Life Outcomes. 2019;17:124.
- Vézina-Im LA, Beaulieu D, Turcotte S, Turcotte AF, Delisle-Martel J, Labbé V, et al. Association between beverage consumption and sleep quality in adolescents. Nutrients. 2024;16:285.
- Binks H, E Vincent G, Gupta C, Irwin C, Khalesi S. Effects of diet on sleep: A narrative review. Nutrients. 2020;12:936.
- Suardiaz-Muro M, Morante-Ruiz M, Ortega-Moreno M, Ruiz MA, Martín-Plasencia P, Vela-Bueno A. Sleep and academic performance in university students: A systematic review. Rev Neurol. 2020;71:43–53.
- Machado-Duque ME, Echeverri Chabur JE, Machado-Alba JE. Somnolencia diurna excesiva, mala calidad del sueño y bajo rendimiento académico en estudiantes de Medicina [Excessive Daytime Sleepiness, Poor Quality Sleep, and Low Academic Performance in Medical Students]. Rev Colomb Psiquiatr. 2015;44:137–42. Spanish.
- Perotta B, Arantes-Costa FM, Enns SC, Figueiro-Filho EA, Paro H, Santos IS, et al. Sleepiness, sleep deprivation, quality of life, mental symptoms and perception of academic environment in medical students. BMC Med Educ. 2021;21:111.
- Seoane HA, Moschetto L, Orliacq F, Orliacq J, Serrano E, Cazenave MI, et al. Sleep disruption in medicine students and its relationship with impaired academic performance: A systematic review and meta-analysis. Sleep Med Rev. 2020;53:101333.
- Owens H, Christian B, Polivka B. Sleep behaviors in traditional-age college students: A state of the science review with implications for practice. J Am Assoc Nurse Pract. 2017;29:695–703.
- Nikolic A, Bukurov B, Kocic I, Vukovic M, Ladjevic N, Vrhovac M, et al. Smartphone addiction, sleep quality, depression, anxiety, and stress among medical students. Front Public Health. 2023;11:1252371.
- Li W, Chen J, Li M, Smith AP, Fan J. The effect of exercise on academic fatigue and sleep quality among university students. Front Psychol. 2022;13:1025280.
- Teboul M, Delaunay F. Horloges biologiques-Un rythme peut en cacher un autre [Biological clocks: A rythm can hide another one]. Med Sci (Paris). 2018;34:30–3. French.
- Holst SC, Landolt HP. Sleep-Wake Neurochemistry. Sleep Med Clin. 2022;17:151–60.
- Wright KP Jr, Drake AL, Frey DJ, Fleshner M, Desouza CA, Gronfier C, et al. Influence of sleep deprivation and circadian misalignment on cortisol, inflammatory markers, and cytokine balance. Brain Behav Immun. 2015;47:24–34.
- Billings ME, Hale L, Johnson DA. Physical and social environment relationship with sleep health and disorders. Chest. 2020;157:1304–12.
- Hutka P, Krivosova M, Muchova Z, Tonhajzerova I, Hamrakova A, Mlyncekova Z, et al. Association of sleep architecture and physiology with depressive disorder and antidepressants treatment. Int J Mol Sci. 2021;22:1333.
- Duthie CJ, Cameron C, Smith-Han K, Beckert L, Delpachitra S, Garland SN, et al. Sleep management strategies among medical students at the University of Otago. Behav Sleep Med. 2023;21:448–59.
- Duthie CJ, Cameron C, Smith-Han K, Beckert L, Delpachitra S, Garland SN, et al. Reasons for why medical students prefer specific sleep management strategies. Behav Sleep Med. 2024;22:516–29.
Recommended Citation
Ali H, Musa DH, Mohammed AH, Abdulraheem H, Salahadeen S, Mustafa A, et al. The Association Between Irregular Sleep Patterns and Learning Outcomes: Implications for Students’ Health in Iraq. Makara J Health Res. 2025;29.
Creative Commons License

This work is licensed under a Creative Commons Attribution-Share Alike 4.0 International License.
Included in
Epidemiology Commons, International Public Health Commons, Other Mental and Social Health Commons
