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Table 2 Change of primary and secondary outcomes and the results of longitudinal analysis

From: The effect of intradialytic exercise on calcium, phosphorus and parathyroid hormone: a randomized controlled trial

 

Intervention

 

Usual care

   
 

Baseline (n = 22)

3 months (n = 22)

6 months (n = 20)

P†

Baseline (n = 22)

3 months (n = 21)

6 months (n = 19)

P†

Group × Time

Observed Power

Ca (mg/dl)

8.1 ± 0.6

8.7 ± 0.6

9.2 ± 0.6

 < 0.001**

8.4 ± 0.5

8.6 ± 0.6

8.3 ± 0.7

0.4

 < 0.001**

0.98

P (meq/lit)

5.8 ± 1.4

5.1 ± 1.1

4.1 ± 0.5

 < 0.01**

5.4 ± 1.3

5.9 ± 1.2

5.7 ± 0.9

0.1

 < 0.001**

0.97

PTH (pg/ml)

459 ± 192

342 ± 127.4

248.6 ± 78.4

 < 0.001**

382.5 ± 166.8

363.5 ± 153.5

375.3 ± 150

0.7

 < 0.001**

0.97

Ca × P (mg2 /dL2)

47.3 ± 11.1

44 ± 8

38 ± 5

0.01*

44.2 ± 10.6

50.4 ± 10

46.2 ± 7.3

0.1

0.003**

0.89

ALP (U/L)

194.6 ± 28.3

161.5 ± 27

135.9 ± 19.5

 < 0.001**

200.5 ± 30.4

209 ± 28.3

208.4 ± 31

0.1

 < 0.001**

0.99

  1. Ca serum calcium, P serum phosphorous, PTH parathyroid hormone, ALP alkaline phosphatase
  2. Values are as mean ± standard deviation
  3. Group × Time is an interaction from a two-way repeated-measures analysis of the effect of time from baseline to 6 months
  4. †: P-value for within group changes
  5. *p < 0.05 significant
  6. **p < 0.01 highly significant
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BMC Nephrology

ISSN: 1471-2369

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