Menstrual characteristics and night work among nurses

Moen, Bente E.; Baste, Valborg; Morken, Tone; Alsaker, Kjersti; Pallesen, Ståle; Bjorvatn, Bjørn

doi:10.2486/indhealth.2014-0214

Cited by 19 publications

(11 citation statements)

References 30 publications

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“…The differences may be related to different populations and shift schedules. In that study, 56 % were on a three-shift schedule, and 9 % were on a night shift, while almost all nurses experienced a three-shift schedule in the present study [ 25 ].…”

Section: Discussionmentioning

confidence: 76%

“…Although there are studies that found no association between night work and irregular menstruation or cycle length variation [ 25 ], a systematic review of 16 independent cohorts from 15 studies (a total of 123,403 women) affirmed that shift work could increase the menstrual disruption rate to 16.05 % from 13.05 % in non-shift workers [ 26 ].…”

Section: Discussionmentioning

confidence: 99%

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Rotating shift work and menstrual characteristics in a cohort of Chinese nurses

Wang

Deng

et al. 2016

BMC Women's Health

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BackgroundShift work disrupts the circadian rhythm and may cause menstruation disorders. This study assessed the impact of shift work on menstrual cycle in a population of Chinese nurses.MethodsQuestionnaires on menstrual characteristics and shift schedules were sent to female nurses of the First Affiliated Hospital of Sun Yat-sen University (FAHSYSU) and Guanghua Hospital of Stomatology (GHHS), affiliated to Sun Yat-sen University. Part I was a cross-sectional study and included 139 nurses in GHHS who had regular 8:00–17:30 working (non-shift group), and 334 nurses from FAHSYSU who worked shifts, a response rate of 67.5 % and 59.6 %, respectively (age ≤ 50 years). Menstrual patterns were compared and age-adjusted relative risks of shift work were analyzed. Part II was a nested case–control study. Cases were nurses in Part I who had regular cycle with mean cycle length (MCL) of 25–31 days and but at least 3 days variation in MCL after starting shift work (n = 45). Controls consisted of 67 nurses with matching shift patterns and age, but no MCL changes. A control non-shift age-matched group consisted of 30 GHHS nurses with no MCL changes. A follow-up second questionnaire was sent 2 years later.ResultsIn Part I, the shift group had a significantly higher proportion of nurses with menstrual cycle irregularity. The proportion of nurses with a cycle of 25–31 days decreased from 81.7 to 67.8 % after changing to shift work. Logistic regression analysis showed that night shift frequency was the only risk factor associated with cycle shortening. After adjusting for age, MCL was shorter when night work was performed > 7 times per month. In Part II, the mean change in MCL in the case group, including prolongation or shortening, was 4.115 ± 2.084 days after shift working. In the 2 years’ follow-up, the MCL of the study group did not recover to the original length.ConclusionsRotating shift work can increase the prevalence of menstrual cycle irregularity. Night shift frequency was the only risk factor associated with cycle reduced. Changes in MCL did not show recovery over a follow-up period of 2 years.Electronic supplementary materialThe online version of this article (doi:10.1186/s12905-016-0301-y) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Rotating shift work and menstrual characteristics in a cohort of Chinese nurses

Wang

Deng

et al. 2016

BMC Women's Health

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“…Attempts to sleep during the day are often difficult as their sleep cycles are more susceptible to being disrupted or broken. Because of this, night shift nurses take longer to fall asleep and are unable to enter deep sleep even if they manage to fall asleep, resulting in insufficient and a lack of sleep31 ) , lower sleep quality, and fewer hours of sleep than those of day or evening shift nurses. Amassing sleep debt over time could lead to chronic fatigue, which would ultimately lower one’s alertness and make one more prone to mistakes and accidents32 ) .…”

Section: Discussionmentioning

confidence: 99%

Relationship between job satisfaction and sleep quality of female shift-working nurses: using shift type as moderator variable

Chang

2019

Ind Health

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This study was to investigate the impact of job satisfaction as the independent variable and the type of shift as the moderator variable on the sleep quality of female shift-working nurses. The Minnesota Satisfaction Questionnaire (MSQ) short form and the Pittsburgh Sleep Quality Index (PSQI) were used as evaluation tools. The subjects in the study were female shift-working nurses from teaching hospitals in northern Taiwan. A total of 178 valid questionnaires were recovered. A hierarchical multiple regression (HMR) was used to test for the moderating effect of shift type. The results demonstrated that there was a negative correlation between the total score for general job satisfaction and the Global PSQI scores. The Global PSQI scores were higher for nurses working night shifts than for those working day and evening shifts. HMR showed significant variances in the interaction between general job satisfaction of female shift-working nurses and the day/night shift as well as the evening/night shift. The type of shift had a moderating effect on the ways in which general job satisfaction impacts sleep quality. Furthermore, the moderating effect of night shift on the impact of job satisfaction on sleep quality was weaker in nurses working the night shift.

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“…A systematic review affirmed the effect of shiftwork on menstrual disruption, not only in terms of abnormal cycles, but also spontaneous pregnancy loss [ 26 ]. Another study showed that night work itself did not show a significant association with an irregular menstrual cycle [ 27 ]. Therefore, future research with a detailed study design is warranted to assess the effect of interval time on female health.…”

Section: Discussionmentioning

confidence: 99%

Relationship between menstruation status and work conditions in Japan

Nishikitani

Nakao

Tsurugano

et al. 2017

BioPsychoSocial Med

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BackgroundMenstrual problems can significantly impact daily and work life. In reaction to a shrinking population, the Japanese government is encouraging more women to participate in the labor force. Actual success in achieving this aim, however, is limited. Specifically, participation in the workforce by women during their reproductive years is impacted by their health, which involves not only work conditions, but also traditional family circumstances. Therefore, it is important to further assess and gather more information about the health status of women who work during their reproductive years in Japan. Specifically, women’s health can be represented by menstruation status, which is a pivotal indicator. In this study, we assessed the association between short rest periods in work intervals and menstruation and other health status indicators among female workers in Japan.MethodsStudy participants were recruited from the alumnae of a university, which provided a uniform educational level. All 9864 female alumnae were asked to join the survey and 1630 (17%) accepted. The final sample of study participants (n = 505) were aged 23–43 years, had maintained the same job status for at least 1 year, and were not shift workers, had no maternal status, and did not lack any related information. The participants were divided into two groups according to interval time, with 11 h between end of work and resumption of daily work as a benchmark. This interval time was based on EU regulations and the goal set by the government of Japan. Health outcomes included: menstrual cycle, dysmenorrhoea symptoms, anxiety regarding health, and satisfaction in terms of health. Multiple logistic regression analyses were conducted to estimate the odds ratios (ORs) and 95% confidence intervals (CIs) for health indexes in association with interval time by adjusting for confounding variables that included both psychosocial and biological factors.ResultsWe compared the health status of women in the workforce with and without a sufficient interval time of 11 h/day. Workers who had a short interval time had a significantly higher prevalence of anxiety about health and dissatisfaction with their health. For menstruation status, only abnormal menstruation cycles were observed more often among workers in the short interval group than those of the long interval group. However, this association disappeared when biological confounding factors were adjusted in a multivariable regression model. Dysmenorrhea symptoms did not show a statistically significant association with short interval time.ConclusionsThis study found a significant association between a short interval time of less than 11 h/day and subjective health indicators and the menstrual health status of women in the workforce. Menstrual health was more affected by biological factors than social psychological factors. A long work time and short interval time could increase worker anxiety and dissatisfaction and may deteriorate the menstrual cycle.

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Menstrual characteristics and night work among nurses

Cited by 19 publications

References 30 publications

Rotating shift work and menstrual characteristics in a cohort of Chinese nurses

Rotating shift work and menstrual characteristics in a cohort of Chinese nurses

Relationship between job satisfaction and sleep quality of female shift-working nurses: using shift type as moderator variable

Relationship between menstruation status and work conditions in Japan

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