TABLE S-2 Criteria and Dietary Reference Intake Values for Phosphorus by Life Stage Group

Life Stage Group a

Criterion

EAR (mg/day) b

RDA (mg/day) c

AI (mg/day) d

0 through 6 months

Human milk content

100

7 through 12 months

Human milk + solid food

275

1 through 3 years

Factorial approach

380

460

4 through 8 years

Factorial approach

405

500

9 through 13 years

Factorial approach

1,055

1,250

14 through 18 years

Factorial approach

1,055

1,250

19 through 30 years

Serum Pie

580

700

31 through 50 years

Serum Pi

580

700

51 through 70 years

Extrapolation of serum Pi from 19 through 50 years

580

700

> 70 years

Extrapolation of serum Pi from 19 through 50 years

580

700

Pregnancy

≤ 18 years

Factorial approach

1,055

1,250

19 through 50 years

Serum Pi

580

700

Lactation

≤ 18 years

Factorial approach

1,055

1,250

19 through 50 years

Serum Pi

580

700

a All groups except Pregnancy and Lactation are males and females.

bEAR = Estimated Average Requirement. The intake that meets the estimated nutrient needs of 50 percent of the individuals in a group.

c RDA = Recommended Dietary Allowance. The intake that meets the nutrient need of almost all (97 to 98 percent) of individuals in a group.

dAI = Adequate Intake. For healthy infants fed human milk, AI is the estimated mean intake.

e Pi = Serum inorganic phosphate concentration.



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