Table 1.

Subject and Clinical Characteristics

Characteristic	Mean ± SD, n = 26
Age, years	61 ± 13
Gender M/F	24/2
Race/ethnicity n (%)
African American	10 (38%)
Asian or Pacific Islander	3 (12%)
Caucasian	10 (38%)
Hispanic	2 (8%)
Native American	1 (4%)
Number of comorbid conditions n (%)
Hypertension	25 (96%)
Diabetes mellitus	15 (58%)
Coronary artery disease	12 (46%)
Body mass index, kg/m2	29.9 ± 6.5
Plasma creatinine, mg/dL (μmol/L)	2.55 ± 0.72 (225.26 ± 63.81)
eGFR, mL/minutes/1.73 m2*	32 ± 10
Stage 3 CKD, n = 13	39 ± 7
Stage 4 CKD, n = 13	25 ± 5
BUN, mg/dL (mmol/L)	43 ± 18 (15.4 ± 6.5)
Plasma phosphorous, mg/dL (mmol/L)	3.53 ± 0.55 (0.82 ± 0.13)
Plasma calcium, mg/dL (mmol/L)	9.01 ± 0.43 (2.25 ± 0.10)
PTH, pg/mL (pmol/L)†	132 (103, 182) (14 [11, 19])
25-hydroxyvitamin D, ng/mL (nmol/L)	21 ± 10 (53.3 ± 25.9)
1,25-dihydroxyvitamin D, pg/mL (pmol/L)	24.5 ± 15.4 (63.8 ± 39.9)
Serum albumin, mg/dL	4.1 ± 0.6
Hemoglobin, mg/dL	12.3 ± 1.7
Hematocrit, %	36 ± 5

BUN, blood urea nitrogen; CKD, chronic kidney disease; eGFR, estimated glomerular filtration rate.

Laboratory results reported in conventional units with SI units in parentheses.

Data presented as the mean ± SD.

^*By Modification of Diet in Renal Disease (MDRD).

^†Reported as the median (25th, 75th) because of non-normal distribution.