American Indians

Butte et al., 1981

NR

136 ± 115f

4.5 ± 3.8

1.44g

7.96 ± 1.47

169 ± 139

221 ± 114

12.2 ± 5.3

NR

Low-income women

Sneed et al., 1981h

5–7 days

NR

NR

1.52 ± 0.40

7.0 ± 3.1

290 ± 100

NR

NR

NR

 

43–45 days

NR

NR

1.41 ± 0.56

5.2 ± 1.8

340 ± 200

NR

NR

NR

a From NRC (1989). Details of the studies cited are given in Table 4-4.

b SD = Standard deviation.

c Standard deviation not applicable to RDA.

d NR = Not reported.

e Standard error of the mean.

f Units are IU; 1 µg vitamin D = 40 IU.

g Reported standard deviation is not included because of a suspected error.

h Unsupplemented women.



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