Predictors of the initiation of shift work disorder among Chinese intern nurses: a prospective study

Feb 17, 2020Sleep medicine

Factors linked to starting shift work disorder in Chinese intern nurses

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Abstract

The prevalence rates of shift work disorder (SWD) were 35.2% at three months and 37.7% at six months among Chinese intern nurses.

Morningness is associated with a higher likelihood of SWD onset, with an odds ratio of 1.31 at three months and 1.36 at six months.
Languidity may increase the odds of developing SWD, indicated by an odds ratio of 1.56 at three months.
Sleep reactivity is linked to a greater risk of SWD, with odds ratios of 1.29 at three months and 1.31 at six months.
Circadian flexibility appears to reduce the likelihood of SWD onset, shown by an odds ratio of 0.75 at three months.
Persistent SWD is significantly affected by morningness, sleep reactivity, languidity, and flexibility over six months.

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AIM: Individual vulnerability to shift work disorder (SWD) varies. The aim of the present study was to verify the individual characteristics that predicted SWD onset by following Chinese intern nurses who at baseline had not worked rotating or night shifts.

METHODS: A total of 706 Chinese first-year intern female nurses aged 16-24 years were recruited. At baseline (T), they reported demographic characteristics, insomnia symptoms and excessive sleepiness, trait neuroticism, sleep reactivity, morningness, and circadian flexibility and languidity. At the three-month (T) and six-month (T) follow-up, the SWD status was determined based on significant sleep disturbance and/or excessive sleepiness in the context of working a rotating shift schedule. 0 1 2

RESULTS AND CONCLUSIONS: The prevalence rates of SWD were 35.2% at Tand 37.7% at T. Two bivariate logistics regressions revealed that morningness (odds ratio [OR] = 1.31, 95% confidence interval [CI] = 1.09-1.58, T; OR = 1.36, 95% CI = 1.12-1.65, T), languidity (OR = 1.56, 95% CI = 1.28-1.90, T), and sleep reactivity (OR = 1.29, 95% CI = 1.07-1.57, T; OR = 1.31, 95% CI = 1.07-1.61, T) predicted the onset of SWD, while flexibility (OR = 0.75, 95% CI = 0.62-0.90, T) decreased the odds of SWD onset. By comparing nurses with SWD and nurses without SWD across all six months, morningness (OR = 1.58, 95% CI = 1.20-2.07), sleep reactivity (OR = 1.54, 95% CI = 1.16-2.04), languidity (OR = 1.70, 95% CI = 1.30-2.22), and flexibility (OR = 0.70, 95% CI = 0.54-0.90) showed significant effects on persistent SWD. 1 2 1 2 1 1 2 1

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Predictors of the initiation of shift work disorder among Chinese intern nurses: a prospective study

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