Fifteen 10-cm soil levels had to be identified, each containing the information on prevalent soil type with a 16th level representing everything below the initial 1.5 m.
Missing information was prevalent in 0% (age) – 13.7% (previous abortion) of variables.
Missing information was prevalent in 0.07 (age) –13% (Counselling after the abortion) of variables.
However, while the most abundant category of the min_set was Metabolism, Information was prevalent in the max_set.
Detailed information on prevalent and incident metabolic syndrome components, diabetes, and cardiovascular events is available from all examinations.
Information on prevalent diabetes (yes/no) and smoking status (current, former, never, missing) was obtained through self-administered baseline questionnaires.
The surveillance of active dengue virus activity during inter-epidemic periods provides information on prevalent virus serotypes in the area.
In addition to these examinations, information on prevalent disease status is obtained by accessing data from the Nationwide Medical Registry (LMR, sourced by Dutch Hospital Data, Utrecht, The Netherlands).
Information on prevalent chronic disease, including ischaemic heart disease (ICD 10 I20.0–25.9), stroke (ICD 10 I60.0–69.8) and cancer (ICD 10 C00.0–97.9), was retrieved from the Danish National Patient Registry, which covers all hospitalizations in Denmark.
