Geometric mean and selected percentiles of serum concentrations (in ng/mL) for the total U.S. population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2000.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
10th
50th
90th
Males and Females
Total, 3-11 years
112
(110-114)
93.0
(91.0-96.0)
113
(111-114)
130
(127-133)
1186
3–5 years
107
(104-110)
90.0
(83.0-94.0)
110
(105-112)
128
(124-131)
343
6–11 years
114
(111-116)
95.0
(93.0-102)
113
(111-116)
130
(128-134)
843
Males
Total, 3-11 years
113
(110-116)
94.0
(91.0-98.0)
114
(111-116)
134
(129-137)
626
3–5 years
108
(103-112)
87.0
(64.0-95.0)
108
(104-112)
129
(123-136)
188
6–11 years
115
(111-119)
96.0
(91.0-104)
114
(110-121)
134
(129-137)
438
Females
Total, 3-11 years
111
(108-113)
93.0
(90.0-96.0)
112
(110-116)
128
(126-131)
560
3–5 years
107
(102-111)
89.0
(72.0-96.0)
110
(105-115)
126
(119-131)
155
6–11 years
112
(109-115)
93.0
(89.0-98.0)
113
(109-117)
128
(126-131)
405
Table 4.2.b. Serum selenium: Mexican Americans
Geometric mean and selected percentiles of serum concentrations (in ng/mL) for Mexican Americans in the U.S. population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2000.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
10th
50th
90th
Males and Females
Total, 3-11 years
110
(107-113)
93.0
(87.0-96.0)
109
(106-113)
126
(123-131)
477
3–5 years
108
(104-112)
90.0
(83.0-98.0)
107
(103-113)
124
(120-129)
131
6–11 years
111
(108-114)
95.0
(91.0-100)
111
(107-114)
128
(123-133)
346
Males
Total, 3-11 years
111
(108-115)
93.0
(85.0-98.0)
111
(108-114)
129
(125-135)
262
3–5 years
109
(105-113)
87.0†
(83.0-99.0)
108
(104-114)
125†
(120-135)
71
6–11 years
112
(109-116)
93.0
(87.0-100)
111
(107-115)
133
(126-135)
191
Females
Total, 3-11 years
108
(105-112)
95.0
(89.0-98.0)
108
(105-114)
123
(118-126)
215
3–5 years
106
(100-112)
89.0†
(76.0-98.0)
105
(100-112)
123†
(116-130)
60
6–11 years
109
(106-112)
96.0
(87.0-99.0)
111
(105-114)
123
(118-132)
155
† Estimate is subject to greater uncertainty due to small cell size.
Table 4.2.c. Serum selenium: Non-Hispanic blacks
Geometric mean and selected percentiles of serum concentrations (in ng/mL) for non-Hispanic blacks in the U.S. population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2000.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
10th
50th
90th
Males and Females
Total, 3-11 years
107
(104-110)
91.0
(87.0-94.0)
107
(104-111)
124
(120-126)
341
3–5 years
104
(101-107)
91.0†
(84.0-94.0)
104
(102-109)
121†
(116-125)
98
6–11 years
108
(105-112)
92.0
(87.0-94.0)
108
(105-112)
124
(121-130)
243
Males
Total, 3-11 years
108
(105-112)
91.0
(86.0-94.0)
109
(104-113)
124
(118-130)
173
3–5 years
104
(99.4-109)
83.0†
(50.0-91.0)
105
(103-112)
118†
(113-131)
56
6–11 years
110
(106-115)
92.0
(86.0-101)
110
(105-115)
126
(119-133)
117
Females
Total, 3-11 years
106
(104-108)
91.0
(87.0-95.0)
107
(103-109)
122
(118-124)
168
3–5 years
105
(101-109)
93.0†
(84.0-96.0)
103
(98.0-112)
120†
(112-127)
42
6–11 years
106
(104-109)
92.0
(87.0-96.0)
106
(103-110)
121
(118-124)
126
† Estimate is subject to greater uncertainty due to small cell size.
Table 4.2.d. Serum selenium: Non-Hispanic whites
Geometric mean and selected percentiles of serum concentrations (in ng/mL) for non-Hispanic whites in the U.S. population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2000.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
10th
50th
90th
Males and Females
Total, 3-11 years
113
(110-116)
94.0
(90.0-102)
116
(112-118)
130
(127-135)
265
3–5 years
107
(102-113)
87.0†
(57.0-103)
114
(105-118)
130†
(123-133)
81
6–11 years
115
(111-119)
94.0
(90.0-104)
116
(111-120)
131
(127-136)
184
Males
Total, 3-11 years
113
(109-118)
93.0
(91.0-102)
114
(109-121)
134
(128-137)
140
3–5 years
106
(98.9-114)
87.0†
(57.0-99.0)
105
(99.0-122)
125†
(123-135)
41
6–11 years
116
(110-122)
102†
(84.0-110)
115
(110-123)
134†
(129-139)
99
Females
Total, 3-11 years
112
(108-117)
94.0
(80.0-102)
116
(111-119)
130
(126-132)
125
3–5 years
108
(101-117)
80.0†
(33.0-107)
114
(107-118)
130†
(120-133)
40
6–11 years
114
(109-119)
93.0†
(79.0-105)
118
(110-120)
130†
(126-135)
85
† Estimate is subject to greater uncertainty due to small cell size.
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