Mean Daily Intake

RDA, Population Group, and Reference

Months Post Partum

Sample Size

Energy, kcal ± SDb

Protein, g ± SD

Calcium, mg ± SD

Phosphorus, mg ± SD

Iron, mg ± SD

Vitamin A, IUc ± SD

Thiamin, mg ± SD

Riboflavin, mg ± SD

Niacin, mg ± SD

Ascorbic acid, mg ± SD

Vegetarians

Finley, 1985

Mixed

29

2,158 ± 601

78 ± 28

1,303 ± 611

1,736 ± 605

16.8 ± 6.9

9,756 ± 6,149

1.80 ± 1.02

2.15 ± 0.91

15.4 ± 6.5

175 ± 137

American Indians

Butte and Calloway, 1981

1

23

2,190 ± 990

87 ± 38

718 ± 458

1,270 ± 559

15.2 ± 5.9

5,467 ± 10,002

1.39 ± 0.69

1.81 ± 1.07

20.1 ± 9.1

150 ± 165

a Nutrients listed in this table are those most commonly included in nutrient data bases.

b SD = Standard deviation.

c IU = International units.

d NA = Not applicable.

e Calculated as the recommended daily energy increment for lactation (500 kcal) plus the energy allowance for females 11 to 50 years of age (2,200 kcal).

f Standard deviation not applicable to the RDA.

g Units for the RDAs are micrograms of retinol equivalents (RE); this is equivalent to approximately 5 IU of vitamin A obtained from the typical U.S. diet in the form of retinol (from animal products) and carotenoids (from plants) (Olson, 1987).

h NR = Not reported.

i Women taking supplements; intake from food only.

j Women taking no supplements.

k Standard error of the mean.

l Women in the study who averaged 95% lactation over the entire lactation period.

m Given as N = 46 for 26 subjects studied twice.



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