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TABLE H-2 Mean Serum Retinol Concentrations (μg/dl) by Quartile of Total Vitamin A Intake of Individuals Who Were Taking Supplements, NHANES III (1988–1994)

Sex/Age Categorya

n

Quartile

1st

2nd

3rd

4th

M 4–8 y

401

b

33.0

35.6

35.2

M 9–13 y

159

33.0

45.0

41.6

M 14–18 y

71

52.0

53.0

53.8

M 19–30 y

227

64.0

60.5

M 31–50 y

360

63.3

68.4

M 51–70 y

295

59.4

68.6

M 71+ y

151

66.2

64.4

M Total

1,664

45.9

54.3

59.4

F 4–8 y

380

32.0

34.3

35.7

F 9–13 y

185

34.2

40.8

F 14–18 y

85

46.5

F 19–30 y

202

41.0

49.5

F 31–50 y

519

35.0

44.0

48.4

51.9

F 51–70 y

271

53.6

60.4

F 71+ y

194

59.6

63.0

F Total

1,836

35.0

36.9

44.2

51.2

a M = male, F = female.

b No value could be computed, primarily due to an empty data cell or the absence of sampling strata representation.

SOURCE: C. Ballew and C. Gillespie, Division of Nutrition and Physical Activity, Centers for Disease Control and Prevention, unpublished data.



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