Multiple imputation of missing values was not necessary before performing a longitudinal mixed-model analysis

Twisk, Jos W. R.; Boer, Michiel R. de; Vente, Wieke de; Heymans, Martijn W.

doi:10.1016/j.jclinepi.2013.03.017

Cited by 436 publications

(350 citation statements)

References 32 publications

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“…On the other hand, the larger benefits in terms of enhanced cardiorespiratory fitness appeared among those with medication for pre-existing hypertension or heart disease. Due to some differences in missing data between groups, at baseline and follow-up, the mixed-model analysis was applied, since it allows an intention-to-treat analysis with missing observations (62).…”

Section: Strengths and Limitations Of The Studymentioning

confidence: 99%

Does aerobic exercise improve or impair cardiorespiratory fitness and health among cleaners? A cluster randomized controlled trial

Korshøj

Lidegaard²,

Skotte³

et al. 2014

Scand J Work Environ Health

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Section: Strengths and Limitations Of The Studymentioning

confidence: 99%

Does aerobic exercise improve or impair cardiorespiratory fitness and health among cleaners? A cluster randomized controlled trial

Korshøj

Lidegaard²,

Skotte³

et al. 2014

Scand J Work Environ Health

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“…Missing values were assumed to be missing at random. Under this assumption, mixed models provide valid estimates, without data imputation (Twisk et al 2013). If extreme outliers were found, sensitivity analyses with and without the specific observations were conducted to decide on the best model.…”

Section: Discussionmentioning

confidence: 99%

Examining courses of sleep quality and sleepiness in full 2 weeks on/2 weeks off offshore day shift rotations

Riethmeister

Bültmann

Boer

et al. 2018

Chronobiology International

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To better understand sleep quality and sleepiness problems offshore, we examined courses of sleep quality and sleepiness in full 2-weeks on/2-weeks off offshore day shift rotations by comparing pre-offshore (1 week), offshore (2 weeks) and post-offshore (1 week) work periods. A longitudinal observational study was conducted among N=42 offshore workers. Sleep quality was measured subjectively with two daily questions and objectively with actigraphy, measuring: time in bed (TIB), total sleep time (TST), sleep latency (SL) and sleep efficiency percentage (SE%). Sleepiness was measured twice a day (morning and evening) with the Karolinska Sleepiness Scale. Changes in sleep and sleepiness parameters during the pre/post and offshore work periods were investigated using (generalized) linear mixed models. In the pre-offshore work period, courses of SE% significantly decreased (p=.038). During offshore work periods, the courses of evening sleepiness scores significantly increased (p<.001) and significantly decreased during post-offshore work periods (p=.004). During offshore work periods, TIB (p<.001) and TST (p<.001) were significantly shorter, SE% was significantly higher (p=.002), perceived sleep quality was significantly lower (p<.001) and level of rest after wake was significantly worse (p<.001) than during the preand post-offshore work periods. Morning sleepiness was significantly higher during offshore work periods (p=.015) and evening sleepiness was significantly higher in the post-offshore work period (p=.005) compared to the other periods. No significant changes in SL were observed. Courses of sleep quality and sleepiness parameters significantly changed during full 2-weeks on/2-weeks off offshore day shift rotation periods. These changes should be considered in offshore fatigue risk management programmes. ARTICLE HISTORY

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“…Missing data, mainly due to loss to followup, were addressed by the use of the MIXED procedure 42 and the following sensitivity analyses. Complete case analyses were conducted for all eligible women.…”

Section: Discussionmentioning

confidence: 99%

Lack of association between drought and mental health in a cohort of 45–61 year old rural Australian women

Powers

Dobson

Berry

et al. 2015

Australian and New Zealand Journal of Public Health

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Multiple imputation of missing values was not necessary before performing a longitudinal mixed-model analysis

Cited by 436 publications

References 32 publications

Does aerobic exercise improve or impair cardiorespiratory fitness and health among cleaners? A cluster randomized controlled trial

Does aerobic exercise improve or impair cardiorespiratory fitness and health among cleaners? A cluster randomized controlled trial

Examining courses of sleep quality and sleepiness in full 2 weeks on/2 weeks off offshore day shift rotations

Lack of association between drought and mental health in a cohort of 45–61 year old rural Australian women

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