Table 2

Study arm calcium intakes, phosphate doses, urine calcium and calcium balance

Study

n

Phosphate dose (mmol/day)

Phosphate source

Calcium Intake (mmol/day)

Days on Calcium intake*

Days on each balance study after adaption**

Change uCalcium (mmol/day)

Change Calcium balance (mmol/day)


Patton [21]

18

10

Na2HPO4 & Na glycerophosphate

9

7

7

-0.4

-0.2


Patton [21]

18

19

"

9

7

7

-1.0

0.6


Patton [21]

18

10

"

24

7

7

-0.4

-0.6


Patton [21]

18

19

"

24

7

7

-1.5

0.3


Patton [21]

18

10

"

39

7

7

-1.0

0.03


Patton [21]

18

19

"

39

7

7

-0.4

1.1


Malm [27]

4

24

H3PO4

-

98

7

-0.9

n/a


Malm [27]

2

32

H3PO4

11

98

28

-0.7

0.7


Malm [27]

4

26

H3PO4

20

98

28

-0.9

0.1


Malm [27]

2

19

H3PO4

13

56

56

-1

0.03


Goldsmith [28]

7(4)

32

K2H & KH2

21

7

4

-0.9

0.45


Bell [29]

5

37

Na PolyP

18

6

22

-1.7

n/a


Spencer [30]

10

37

Naglycerophosphate

5

0

22

-0.8

0.03


Spencer [30]

8

37

Naglycerophosphate

21

0

40

-1.7

0.70


Spencer [30]

3

39

Naglycerophosphate

36

0

34

-2.3

-0.35


Spencer [30]

6

36

Naglycerophosphate

50

0

31

-2.1

0.10


Hegsted [31]

8

49

KH+PO+

13

0

12

-2.5

0.94


Zemel [32]

8

32

KH2PO4

10

2

11

-2.0

2.7


Zemel [32]

8

32

(NaPO3)6

10

2

11

-2.0

1.3


Schuette [33]

8

25

KH2PO4

15

2

6

-0.9

0.03


Spencer [34]

1

35

Naglycerophosphate

6

0

66

-3.2

0.5


Spencer [34]

4

34

Naglycerophosphate

20

0

42

-3.0

1.3


Spencer [34]

2

41

Naglycerophosphate

34

0

33

-3.6

0.00


Spencer [34]

3

40

Naglycerophosphate

51

0

40

-3.5

0.2


Whybro [36]

9

32

NaH2PO4

25

5

2

-1.1

n/a


Whybro [36]

11

48

Not stated

25

5

9

-2.4

n/a


Kemi [37]

14

8

Na2 Na3 HPO4

6

0

1

-0.2

n/a


Kemi [37]

14

24

Na2 Na3 HPO4

6

0

1

-0.5

n/a


Kemi [37]

14

48

Na2 Na3 HPO4

6

0

1

-0.5

n/a


Krapf [35]

6

9.6

IV PO4 vs Cl

35

4

3

-3.5

n/a


* days on calcium intake prior to the measurement of outcomes

** the shortest number of days on the balance study is reported if it varied within the comparison interventions

Fenton et al. Nutrition Journal 2009 8:41   doi:10.1186/1475-2891-8-41

Open Data