Skip to contents

[Maturing]

fd() computes the number of work-free days per week for standard and micro versions of the Munich ChronoType Questionnaire (MCTQ).

Usage

fd(wd)

Arguments

wd

An integerish numeric object or an integer object corresponding to the number of workdays per week from a standard or micro version of the MCTQ questionnaire.

Value

An integer object corresponding to the difference between the number of days in a week (7) and the number of workdays (wd).

Details

Standard MCTQ functions were created following the guidelines in Roenneberg, Wirz-Justice, & Merrow (2003), Roenneberg, Allebrandt, Merrow, & Vetter (2012), and from The Worldwide Experimental Platform (theWeP, n.d.).

\(\mu\)MCTQ functions were created following the guidelines in Ghotbi et al. (2020), in addition to the guidelines used for the standard MCTQ.

MCTQ\(^{Shift}\) functions were created following the guidelines in Juda, Vetter, & Roenneberg (2013), in addition to the guidelines used for the standard MCTQ.

See the References section to learn more.

Guidelines

Roenneberg, Allebrandt, Merrow, & Vetter (2012) and The Worldwide Experimental Platform (n.d.) guidelines for fd() (\(FD\)) computation are as follows.

$$FD = 7 - WD$$

Where:

  • \(FD\) = Number of work-free days per week.

  • \(WD\) = Number of workdays per week ("I have a regular work schedule and work ___ days per week").

References

Ghotbi, N., Pilz, L. K., Winnebeck, E. C., Vetter, C., Zerbini, G., Lenssen, D., Frighetto, G., Salamanca, M., Costa, R., Montagnese, S., & Roenneberg, T. (2020). The \(\mu\)MCTQ: an ultra-short version of the Munich ChronoType Questionnaire. Journal of Biological Rhythms, 35(1), 98-110. doi:10.1177/0748730419886986 .

Juda, M., Vetter, C., & Roenneberg, T. (2013). The Munich ChronoType Questionnaire for shift-workers (MCTQ\(^{Shift}\)). Journal of Biological Rhythms, 28(2), 130-140. doi:10.1177/0748730412475041 .

Roenneberg T., Allebrandt K. V., Merrow M., & Vetter C. (2012). Social jetlag and obesity. Current Biology, 22(10), 939-43. doi:10.1016/j.cub.2012.03.038 .

Roenneberg, T., Wirz-Justice, A., & Merrow, M. (2003). Life between clocks: daily temporal patterns of human chronotypes. Journal of Biological Rhythms, 18(1), 80-90. doi:10.1177/0748730402239679 .

The Worldwide Experimental Platform (n.d.). MCTQ. https://www.thewep.org/documentations/mctq/

See also

Other MCTQ functions: gu(), le_week(), msf_sc(), msl(), napd(), sd24(), sd_overall(), sd_week(), sdu(), sjl_sc(), sjl_weighted(), sjl(), so(), tbt()

Examples

## Scalar example

fd(5)
#> [1] 2
#> [1] 2 # Expected
fd(4)
#> [1] 3
#> [1] 3 # Expected
fd(as.numeric(NA))
#> [1] NA
#> [1] NA # Expected

## Vector example

fd(0:7)
#> [1] 7 6 5 4 3 2 1 0
#> [1] 7 6 5 4 3 2 1 0 # Expected
fd(c(1, NA))
#> [1]  6 NA
#> [1]  6 NA # Expected