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TABLE J-3 Mean and Selected Percentiles of Serum Chloride (mmol/L): United States, NHANES III, 1988–1994

Sex/Age Categorya

n

Mean

Percentile

1st

5th

10th

M, 14–18 y

1,196

104.1

100.4

101.5

102.1

Standard error

 

0.2

0.6

0.5

0.4

M, 19–50 y

4,277

104.5

99.9

101.3

102.0

Standard error

 

0.2

0.3

0.3

0.3

M, 51–70 y

1,953

104.3

97.4

99.8

101.0

Standard error

 

0.2

0.5

0.6

0.5

M, 71+ y

1,328

104.1

97.3

99.6

100.8

Standard error

 

0.2

0.8

0.4

0.3

F, 14–18 y

1,269

104.8

100.4

101.7

102.4

Standard error

 

0.2

0.6

0.4

0.3

F, 19–50 y

4,675

105.0

100.0

101.5

102.4

Standard error

 

0.2

0.4

0.3

0.3

F, 51–70 y

2,046

104.1

97.0

99.4

100.6

Standard error

 

0.2

0.5

0.4

0.4

F, 71+ y

1,489

103.7

95.9

98.7

100.0

Standard error

 

0.2

1.0

0.5

0.4

Pregnant

323

105.1

100.8

102.2

102.9

Standard error

 

0.4

1.9

1.3

1.0

Lactating

100

105.3

101.2

102.5

103.2

Standard error

 

0.5

2.8

1.8

1.4

a M = male, F = female (not pregnant and/or lactating).

NOTE: Data were adjusted using the Iowa State University method to provide estimates of usual serum potassium concentrations. 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. Females who had “blank but applicable” pregnancy or lactating status data or who responded “I don’t know” to questions on pregnancy or lactating status were excluded from the analysis.



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