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OCR for page 558
Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
J
U.S. Serum Electrolyte Concentration Data from the Third National Health and Nutrition Examination Survey, 1988–1994
TABLE J-1 Mean and Selected Percentiles of Serum Potassium (mmol/L): United States, NHANES III, 1988–1994
Sex/Age Categorya
n
Mean
Percentile
1st
5th
10th
M, 14–18 y
1,196
4.18
3.82
3.92
3.97
Standard error
0.02
0.07
0.05
0.05
M, 19–50 y
4,277
4.08
3.63
3.76
3.83
Standard error
0.01
0.02
0.02
0.02
M, 51–70 y
1,953
4.11
3.43
3.65
3.76
Standard error
0.01
0.03
0.02
0.02
M, 71+ y
1,328
4.26
3.60
3.80
3.91
Standard error
0.02
0.04
0.03
0.02
F, 14–18 y
1,269
4.06
3.69
3.79
3.84
Standard error
0.02
0.04
0.03
0.03
F, 19–50 y
4,675
4.00
3.52
3.67
3.74
Standard error
0.01
0.03
0.02
0.02
F, 51–70 y
2,046
4.04
3.38
3.60
3.71
Standard error
0.01
0.03
0.03
0.02
F, 71+ y
1,489
4.11
3.34
3.58
3.70
Standard error
0.02
0.03
0.02
0.02
Pregnant
323
3.91
3.52
3.62
3.68
Standard error
0.02
0.18
0.14
0.11
Lactating
100
4.08
3.61
3.76
3.84
Standard error
0.05
0.37
0.25
0.19
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.
OCR for page 559
Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
25th
50th
75th
90th
95th
99th
4.07
4.18
4.29
4.40
4.47
4.59
0.03
0.02
0.03
0.05
0.06
0.09
3.94
4.07
4.21
4.34
4.42
4.58
0.01
0.01
0.01
0.02
0.02
0.03
3.94
4.12
4.29
4.46
4.56
4.77
0.02
0.02
0.02
0.02
0.02
0.02
4.07
4.25
4.43
4.62
4.74
5.00
0.02
0.02
0.02
0.03
0.03
0.05
3.94
4.05
4.17
4.28
4.35
4.48
0.02
0.02
0.02
0.03
0.04
0.06
3.86
3.99
4.13
4.26
4.35
4.53
0.01
0.01
0.01
0.02
0.02
0.03
3.87
4.04
4.20
4.37
4.47
4.69
0.02
0.01
0.01
0.02
0.02
0.03
3.90
4.10
4.32
4.54
4.69
5.01
0.01
0.02
0.02
0.03
0.04
0.06
3.78
3.90
4.03
4.16
4.24
4.40
0.07
0.03
0.06
0.12
0.16
0.24
3.96
4.09
4.21
4.31
4.37
4.47
0.10
0.06
0.11
0.17
0.21
0.27
DATA SOURCE: U.S. Department of Health and Human Services, National Center for Health Statistics, Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994.
SOURCE: ENVIRON International Corporation and Iowa State University Department of Statistics (2003).
OCR for page 560
Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
TABLE J-2 Mean and Selected Percentiles of Serum Sodium (mmol/L): United States, NHANES III, 1988–1994
Sex/Age Categorya
n
Mean
Percentile
1st
5th
10th
M, 14–18 y
1,196
141.4
138.6
139.5
139.9
Standard error
0.1
0.2
0.2
0.1
M, 19–50 y
4,277
141.7
138.7
139.7
140.1
Standard error
0.1
0.2
0.2
0.1
M, 51–70 y
1,953
141.5
137.9
139.1
139.7
Standard error
0.1
0.2
0.2
0.2
M, 71+ y
1,328
141.6
137.9
139.1
139.7
Standard error
0.1
0.2
0.2
0.2
F, 14–18 y
1,269
140.8
136.4
138.3
138.9
Standard error
1.3
8.8
3.4
2.3
F, 19–50 y
4,675
140.9
137.5
138.4
139.0
Standard error
0.1
0.2
0.2
0.1
F, 51–70 y
2,046
141.5
136.4
138.3
139.1
Standard error
0.1
0.6
0.3
0.3
F, 71+ y
1,489
141.3
135.6
137.7
138.6
Standard error
0.2
0.4
0.3
0.3
Pregnant
323
138.8
134.5
136.3
137.0
Standard error
0.2
0.8
0.5
0.4
Lactating
100
141.9
139.3
140.2
140.6
Standard error
0.3
0.5
0.3
0.3
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.
OCR for page 561
Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
25th
50th
75th
90th
95th
99th
140.6
141.4
142.1
142.8
143.3
144.3
0.1
0.1
0.1
0.1
0.2
0.3
140.9
141.7
142.5
143.3
143.7
144.7
0.1
0.1
0.1
0.1
0.1
0.1
140.6
141.5
142.5
143.3
143.8
144.7
0.1
0.1
0.1
0.1
0.1
0.2
140.7
141.6
142.6
143.4
144.0
145.0
0.1
0.1
0.1
0.1
0.1
0.2
139.9
140.8
141.8
142.5
143.0
144.0
1.6
1.1
0.4
0.2
0.2
0.3
139.9
140.8
141.8
142.7
143.4
144.5
0.1
0.1
0.1
0.1
0.1
0.3
140.3
141.5
142.7
143.8
144.4
145.7
0.2
0.1
0.2
0.2
0.2
0.3
140.1
141.4
142.6
143.8
144.6
146.2
0.2
0.2
0.2
0.2
0.3
0.5
137.9
138.7
139.8
140.9
141.5
142.7
0.2
0.2
0.2
0.3
0.4
0.4
141.3
142.0
142.6
143.2
143.5
144.0
0.3
0.3
0.3
0.2
0.2
0.3
DATA SOURCE: U.S. Department of Health and Human Services, National Center for Health Statistics, Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994.
SOURCE: ENVIRON International Corporation and Iowa State University Department of Statistics (2003).
OCR for page 562
Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
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.
OCR for page 563
Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate
25th
50th
75th
90th
95th
99th
103.0
104.1
105.1
106.0
106.6
107.6
0.3
0.2
0.2
0.3
0.4
0.5
103.2
104.5
105.8
106.9
107.6
108.9
0.3
0.2
0.2
0.2
0.2
0.4
102.7
104.4
106.0
107.4
108.3
109.9
0.3
0.3
0.3
0.2
0.3
0.4
102.5
104.2
105.8
107.3
108.2
109.9
0.2
0.2
0.2
0.3
0.4
0.8
103.6
104.8
106.0
107.1
107.7
108.8
0.3
0.2
0.3
0.3
0.3
0.4
103.7
105.1
106.5
107.6
108.3
109.5
0.3
0.2
0.2
0.2
0.2
0.4
102.4
104.2
105.9
107.5
108.4
110.1
0.2
0.3
0.3
0.3
0.3
0.4
102.0
103.8
105.6
107.1
108.0
109.6
0.3
0.3
0.2
0.3
0.4
0.5
104.0
105.1
106.2
107.2
107.9
109.1
0.6
0.4
0.6
0.9
1.2
1.7
104.3
105.4
106.4
107.2
107.6
108.4
0.8
0.5
0.7
1.0
1.3
1.8
DATA SOURCE: U.S. Department of Health and Human Services, National Center for Health Statistics, Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994.
SOURCE: ENVIRON International Corporation and Iowa State University Department of Statistics (2003).
Representative terms from entire chapter:
standard errors