Age
Item
age 18-85
boolean
C0001779 (UMLS CUI [1])
Chronic kidney disease stage 3-4
Item
ckd stage 3-4 (gfr 15-59 ml/min/1.73 m2 body surface area, calculated by using the mdrd study equation gfr calculator)
boolean
C2074731 (UMLS CUI [1])
25-oh-vitamin-d3 and parathyroid hormone measurement
Item
serum 25(oh)d concentrations ≤ 30 ng/ml, and serum pth levels >70 pg/ml documented within the last six months
boolean
C1278060 (UMLS CUI [1,1])
C0202159 (UMLS CUI [1,2])
Past history of liver failure (ast or alt)
Item
history of liver failure (serum ast or alt > 3-fold the upper limit of normal)
boolean
C0262926 (UMLS CUI [1,1])
C0085605 (UMLS CUI [1,2])
Requiring dialysis
Item
requiring dialysis at any stage of the study
boolean
C0011946 (UMLS CUI [1,1])
C0489652 (UMLS CUI [1,2])
undefined item
Item
history of intestinal malabsorption or chronic diarrhea
boolean
C0262926 (UMLS CUI [1,1])
C0024523 (UMLS CUI [1,2])
C0262926 (UMLS CUI [2,1])
C0401151 (UMLS CUI [2,2])
Calcium measurement
Item
serum calcium level (corrected for serum albumin) > 10.5 mg/dl
boolean
C0201925 (UMLS CUI [1])
Calcium x phosphorus product
Item
calcium x phosphorus product >70
boolean
C0552357 (UMLS CUI [1])
Treatment with concomitant medication
Item
treatment with more than 1000 iu of vitamin d per day, or current treatment with a vitamin d analogue or calcimimetic
boolean
C2826666 (UMLS CUI [1,1])
C0042866 (UMLS CUI [1,2])
C3844134 (UMLS CUI [1,3])
C2826666 (UMLS CUI [2,1])
C0042866 (UMLS CUI [2,2])
C2826666 (UMLS CUI [3,1])
C1443768 (UMLS CUI [3,2])
Anti-epileptic medication and other medications which can affect vitamin d metabolism
Item
an anti-epileptic medication and other medications which can affect vitamin d metabolism (e.g., phenobarbital, phenytoin, rifampicin)
boolean
C0003299 (UMLS CUI [1,1])
C0879626 (UMLS CUI [1,2])
C1159433 (UMLS CUI [1,3])
C2826666 (UMLS CUI [2,1])
C0879626 (UMLS CUI [2,2])
C1159433 (UMLS CUI [2,3])