Adherence
The Munich ChronoType Questionnaire for Shift-Workers (MCTQShift) accurately assesses chronotype in shift-workers by using mid-sleep on free days following evening shifts (MSFE), which remains stable and correlates strongly with physiological markers despite rotating shift schedules.
If you work rotating shifts, your 'natural' sleep time (chronotype) can still be measured accurately. Use the MCTQShift method: track your mid-sleep time on free days, specifically those following evening shifts. This value (MSFE) is the most stable indicator of your circadian phase and can be used to optimize shift schedules, potentially reducing social jetlag and health risks associated with misalignment.
Our results support experimental findings showing that sleep is difficult to initiate and to maintain under the constraints of shift-work. Sleep times are remarkably stable on free days (on average between midnight and 0900 h), so that chronotype of shift-workers can be assessed by means of MSF—similar to that of day-workers.
Why this rating
Validated against sleep logs and actimetry in a sample of 52/27 participants and explored in 371 shift-workers; correlations are significant.
Source
The Munich ChronoType Questionnaire for Shift-Workers (MCTQ <sup>Shift</sup> )
Myriam Juda et al. · Journal of Biological Rhythms · 2013
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