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. |
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). |
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. |
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). |
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. |
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). |