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Table 1 Overview of the measurement schedule

From: Klokwerk + study protocol: An observational study to the effects of night–shift work on body weight and infection susceptibility and the mechanisms underlying these health effects

Measurement methods n Measurement period I (Sept/Oct) Sept/Oct–Apr/May Measurement period II (Apr/May)
Questionnaire 1960 One time One time
Anthropometry 1960 One time One time
Smartphone application 1960 Daily Daily
Food diary 1960 3 days
Actigraphy 260 7 days 7 days
Light sensor 260 7 days 7 days
Blood sample 245 One time