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Table 2 Primary and secondary outcomes

From: Vitamin D resistance in chronic kidney disease (CKD)

 

Non-responder

Responder

Replete

P Value‡(responder vs. non-responders)

N

169

221

8

 

Males

86 (50.9%)

119 (53.9%)

6 (75.0%)

0.56

Age†

62.5 (15·5)

64.9 (14·9)

64.5 (18·0)

0.12

Diabetes, only

0 (0.0%)

1 (0.45%)

0 (0.0%)

1.0

Hypertension, only

62 (36.7%)

97 (43.9%)

4 (50.0%)

0.15

Diabetic and hypertensive

102 (60.4%)

113 (51.1%)

3 (37.5%)

0.07

Non-diabetic and non-hypertensive

5 (3.0%)

10 (4.5%)

1 (12.5%)

0.43

CKD

132 (78.1%)

169 (76.5%)

8 (100.0%)

<0.001

Transplant

8 (4.7%)

35 (15.8%)

0 (0.0%)

RRT

29 (17.2%)

17 (7.7%)

0 (0.0%)

eGFR

30.0 (22.0)

36·0 (27.0)

 

<0.001

PTH

99.0 (137.0)

86·5(102.0)

 

0.08

Albumin

3.9 (0.6)

4·3 (0.4)

 

<0.001

Initial mean phosphate

3.8 (1.1)

3·5 (0.9)

 

<0.001

Initial mean 1,25-OH vitamin D

20.5 (18.0)

30.0 (19.0)

 

<0.001

For CKD stages 3–5 only

Initial mean eGFR

28·3 (11.5)

31·5 (11.2)

 

0.0253

Initial mean 25-OH vitamin D

18·3 (9.0)

23·6 (9.1)

 

<0.001

  1. †Categorical variables are expressed as count (%); age as mean (SD); all other continuous variables as median (25th percentile-75th percentile).
  2. ‡Based on chi-squared or Fisher’s exact test for categorical variables; t-test or Wilcoxon Rank Sum test for continuous variables.
  3. †At time of 25-vitamin D grouping.
  4. ‡Prior to 25-vitamin D grouping.
  5. The boldface items indicate values less than 0.05.