Non-indicated vitamin B 12 - and D-testing among Dutch hospital clinicians: a cross-sectional analysis in data registries

Objectives To assess the extent of non-indicated vitamin B 12 - and D-testing among Dutch clinicians and its variation among hospitals. Design Cross-sectional study using registration data from 2015 to 2019. Participants Patients aged between 18 and 70 years who received a vitamin B 12 - or D-test. Primary and secondary outcome measures The proportion of non-indicated vitamin B 12 - and D-testing among Dutch clinicians and its variation between hospitals (n=68) over 2015–2019. Results Between 2015 and 2019, at least 79.0% of all vitamin B 12 -tests and 82.0% of vitamin D-tests lacked a clear i... Mehr ...