Morningness-Eveningness Chronotypes, Sleep Quality, and Sleepiness Among Nurses

Abstract

Background:Poor sleep quality and sleepiness is a common problem in nurses. The morningness-eveningness preference of nurses may affect their sleep quality.Objective:The objectives of this study were (1) to describe the quality of sleep in a group of hospital nurses and (2) to analyze the effect of shift work and morningness-eveningness on the sleep quality of nurses.Methods:In this cross-sectional study, 120 nurses completed the survey in a university hospital in Iran. The study tools were Pittsburgh Sleep Quality Questionnaire (PSQI), Epworth Sleepiness Scale (ESS), and Morningness-Eveningness Questionnaire (MEQ). Nurses with PSQI>5 and ESS≥10 were considered having poor sleep quality and excessive daytime sleepiness. Nurses were subdivided into morning-, intermediate- and evening-types according to MEQ. Data were analyzed by chi-square, Mann–Whitney U-test, logistic regression, and analysis of covariance (ANCOVA) tests.Results:The mean (±SD) of PSQI and ESS was 6.88(2.18) and 9.5(±3.9), respectively. About 74% of nurses reported poor sleep quality, and near 40% of the nurses had excessive daytime sleepiness. Sixty percent of nurses were intermediate-type, and the remaining was morning (24.2%) and evening (15.8%) types. The sleep quality and daytime sleepiness had a significant relation with shift work. The mean PSQI was significantly different between shift work and non-shift work nurses. The mean PSQI of three main chronotypes was statistically different.Conclusion:Poor sleep quality was prevalent in the nurses and was significantly associated with shift work and chronotype. The sleep preference of nurses would be considered as an important factor in the assignment of shift work by hospital managers.

Morningness, eveningness chronotype traits and sleep quality among healthcare workers in shift work-a cross-sectional study from a tertiary care hospital in Kerala

“…In support of our findings Hajaghazadeh et al also report that a significant relation was found only between shift work and quality of sleep. 16 There was strong negative correlation found between the hours of sound sleep (sleep hours) (r=-0.495; df-90; p-0.000) and the total PSQI score in our study.…”

“…The statistically significant association of education (p value-0.003), shift nature (p value 0.005) and alcoholism (p value-0.035) with circadian chronotypes in our study is supported by a study finding by Hajaghazadeh et al where they have reported that the sleepiness of nurses had a significant relation with shift works and marital status (p value <0.05). 16 Marital status (p value-0.021), monthly income level (p value-0.039), tea coffee intake habit (p value 0.017), time gap between dinner and bed time (p value 0.000) and the circadian chronotypes (p value-0.006) showed statistically significant association between quality of sleep among the study participants in our study. In support of our findings Hajaghazadeh et al also report that a significant relation was found only between shift work and quality of sleep.…”

“…There was strong negative correlation found between the hours of sound sleep (sleep hours) (r=-0.495; df-90; p=0.000) and the total PSQI score during partial correlation analysis. 16 Similarly in few other studies have reported range of 62, 78, 70 and 79.8% poor sleep quality among nurses. [6][7][8]19 The 69.9% intermediateness, 30.1% moderately morningness and no participants in eveningness circadian chronotypes found in our study is supported by the finding by Achari et al where they have reported that the prevalence of IT was the highest (62.7%) in the studied population, irrespective of gender and age and that the percentage of evening trait was extremely low (1.93%) and that of morning trait (35.34%) was considerably higher.…”

“…15 A study reports about 74% of nurses had poor sleep quality and 60% were intermediateness, 24.2% were morningness, 15.8% were eveningness chronotypes. 16 Hence, this study aimed to find out the morningness, eveningness chronotypes and sleep quality among allied health workers in shift work.…”

Sleep of nurses in the context of diurnal preference and the shift work

“…Práce na směny narušuje kvalitu spánku a fyziologický systém cirkadiánních rytmů člověka a člověk mění svůj režim (7). Sestry jsou vystaveny riziku poruch spánku, nedostatku spánku, špatné kvality spánku (9,10). Špatná kvalita spánku a nedostatek spánku může u sester narušit koncentraci, paměť, pozornost, výkonnost, což může ovlivnit bezpečnost pacientů (3,11,12,13).…”