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TABLE D-11 Mean and Selected Percentiles for Usual Daily Intake of Sodium:Potassium (molar ratio): United States, NHANES III, 1988–1994

Sex/Age Categorya

n

Mean

Percentile

1st

5th

10th

Both sexes, 2–6 mo

793

0.49

0.20

0.27

0.31

Both sexes, 7–12 mo

827

0.93

0.22

0.31

0.36

Both sexes, 1–3 y

3,309

1.99

0.49

0.77

0.94

Both sexes, 4–8 y

3,448

2.39

1.54

1.74

1.86

 

Standard error

 

0.04

0.03

0.03

0.03

M, 9–13 y

1,219

2.63

1.44

1.71

1.88

Standard error

 

0.06

0.04

0.04

0.04

M, 14–18 y

909

2.81

1.37

1.75

1.96

Standard error

 

0.05

0.06

0.05

0.05

M, 19–30 y

1,902

2.56

1.37

1.66

1.82

Standard error

 

0.02

0.03

0.03

0.03

M, 31–50 y

2,533

2.35

1.24

1.50

1.65

Standard error

 

0.03

0.04

0.03

0.03

M, 51–70 y

1,942

2.14

1.09

1.34

1.48

Standard error

 

0.03

0.03

0.03

0.02

M, 71+ y

1,255

2.07

1.04

1.29

1.43

Standard error

 

0.04

0.03

0.03

0.03

F, 9–13 y

1,216

2.74

1.48

1.77

1.94

Standard error

 

0.09

0.06

0.04

0.07

F, 14–18 y

949

2.70

1.43

1.71

1.88

Standard error

 

0.07

0.05

0.05

0.05

F, 19–30 y

1,901

2.61

1.36

1.65

1.82

Standard error

 

0.04

0.03

0.03

0.03

F, 31–50 y

2,939

2.27

1.18

1.43

1.57

Standard error

 

0.04

0.03

0.03

0.03

F, 51–70 y

2,065

1.96

1.02

1.24

1.37

Standard error

 

0.02

0.02

0.02

0.02

F, 71+ y

1,368

1.89

0.99

1.20

1.32

Standard error

 

0.04

0.02

0.02

0.03

Pregnant

346

2.32

1.16

1.42

1.57

Standard error

 

0.14

0.07

0.11

0.12

Lactating

99

2.03

1.06

1.23

1.36

Standard error

 

0.25

0.09

0.11

0.13

P/L

440

2.27

1.14

1.39

1.55

Standard error

 

0.13

0.06

0.08

0.10

All individuals

28,575

2.32

1.20

1.46

1.61

Standard error

 

0.01

0.01

0.01

0.01

All individuals (+P/L)

29,015

2.32

1.08

1.36

1.53

Standard error

 

0.01

0.01

0.01

0.01

a M = male, F = female, P/L = pregnant and/or lactating.

NOTES: Data are limited to individuals who provided a complete and reliable 24-hour dietary recall on Day 1. The intake distributions for infants 2–6 and 7–12 months and children 1–3 years of age are unadjusted. Means and percentiles for these groups were computed using SAS PROC UNIVARIATE. For all other groups, data were adjusted using the Iowa State University method. Means, standard errors, and percentiles were obtained using C-Side. Standard errors were estimated via jackknife replication. Each standard error has 49 degrees of freedom. Infants and children fed human milk and females who had “blank but applicable” pregnancy and lactating status data or who responded “I don’t know” to questions on pregnancy and lactating status were excluded from all analyses. Females who were both pregnant and lactating were included in both the Pregnant and Lactating categories. The sample sizes for the Pregnant and Lactating categories were very small, so their estimates of usual intake distributions are not reliable.



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