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Sample Size

Mean

Standard Deviation

5th Percentile

Vitamin B12 (µg)

Males

Dietary intake

66

5.4

6.3

1.5

Supplement intake

66

17.4

52.0

1.5

Total intake

66

22.8

52.4

3.9

Females

Dietary intake

169

3.7

3.7

1.1

Supplement intake

169

31.0

105.5

1.5

Total intake

169

34.7

105.8

4.1

Folate (µg)

Males

Dietary intake

48

296

152

140

Supplement intake

48

586

645

120

Total intake

48

882

696

312

Females

Dietary intake

105

260

120

121

Supplement intake

105

484

517

120

Total intake

105

744

567

311

 

SOURCE: Adapted from Appendixes C.5.21–C.5.26 in Hartz SC, Russell RM, Rosenberg IH. 1992. Nutrition in the Elderly. The Boston Nutritional Status Survey. London: Smith-Gordon.



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