Subscript indicating a relation with work-free days
W
Subscript indicating a relation with workdays
BT
Local time of going to bed
FD
Number of work-free days per week
GU
Local time of getting out of bed
HO
Horne & Ostberg’s morningness-eveningness questionnaire (same as MEQ)
LE
Light exposure
LEweek
Average weekly light exposure
MCTQ
Munich ChronoType Questionnaire
MCTQPT
Portuguese version of the MCTQ
MEQ
Morningness-Eveningness Questionnaire
MSF
Midsleep on work-free days. Local time of the midpoint between sleep onset and sleep end on work-free days
MSFsc
Midsleep on work-free days with a sleep correction – MCTQ’s chronotype proxy. Same as MSF with a sleep correction (SC) made when a possible sleep compensation related to a lack of sleep on workdays is identified.
MSW
Midsleep on workdays. Local time of the midpoint between sleep onset and sleep end on workdays.
PRC
Phase response curve
SD
Sleep duration
SDweek
Average weekly sleep duration
SE
Local time of sleep end
SI
“Sleep inertia”. Despite the name, this abbreviation represents the time that a person takes to get up after sleep end. It is used this way by the MCTQ authors.
SJL
Absolute social jetlag
SJLrel
Relative social jetlag
SJLsc
Jankowski’s sleep-corrected social jetlag
SJLsc-rel
Jankowski’s relative sleep-corrected social jetlag
Slossweek
Weekly sleep loss
SO
Local time of sleep onset
Slat
Sleep latency, i.e., time (duration) to fall asleep after deciding to sleep