Cancer Patients Circadian Rhythm Assessment Based on Morningness-Eveningness Preference: A Cross-Sectional Study.

Background And Aim: The circadian rhythm regulates various physiological processes, including sleep-wake cycle, cell division and cancer development. This study aimed to investigate circadian rhythm patterns in cancer patients.

Methods: In this cross-sectional study, 150 cancer patients admitted to the hospital enrolled the study during the fall of 2022. The demographic characteristics of patients were collected using a checklist. Patients also completed a morningness-eveningness questionnaire (MEQ). Utilizing Analysis of Variance (ANOVA) and Fisher's exact test, circadian rhythm types with continuous and categorical variables were compared.

Results: The mean age of the study's participants was 49.83 ± 14.53 years. A total of 82.7% ( = 124) had non-hematological cancers, and breast cancer was the most prevalent type of cancer among patients (23.3%). The MEQ of the patients studied ranged from 41 to 74, with a mean score of 56.6 ± 6.34.

Conclusion: According to the findings of this study, the circadian rhythm is distributed normally among the participants.