Study 1. Demographic determinants of specific sleep behaviours Study 2. Genetic pathways of sleep problems and sleep/wake timing, exposure to noise and light pollution, and mental health problems

This request for the Lifelines Public Health Dataset (Lifelines PHD) will be used for educational purposes. The Lifelines PHD can be used as an introduction into the Lifelines database, to get familiar with big data, and provides an insight into the dataset and the possibilities for research.