This dataset originates from a real cohort study on Vitamin D and mortailty,
described by Martinussen et al (2017). However, to allow public availability
the data were slightly mutilated before inclusion in the
The dataset contains the following variables:
age at baseline.
binary indicator of whether the subject has mutations in the filaggrin gene.
vitamin D level at baseline, measured as serum 25-OH-D (nmol/L).
indicator of whether the subject died during follow-up.
Martinussen T., Sorensen D.D., Vansteelandt S. (2019). Instrumental variables estimation under a structural Cox model. Biostatistics 20(1), 65-79.
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