Table 1.4.a. Plasma homocysteine: Total population
Geometric mean and selected percentiles of plasma concentrations (in µmol/L) for the total U.S. population aged3 years and older, National Health and Nutrition Examination Survey, 1999–2002.
Geometric mean and selected percentiles of plasma concentrations (in µmol/L) for Mexican Americans in the U.S.population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2002.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
5th
50th
95th
Males and Females
Total, 3 years and older
6.35
(6.18-6.52)
3.54
(3.45-3.62)
6.35
(6.14-6.51)
11.6
(11.2-12.0)
4725
3–5 years
4.10
(3.92-4.29)
2.84
(2.66-3.11)
4.09
(3.84-4.33)
5.80
(5.37-6.41)
271
6–11 years
4.45
(4.34-4.56)
3.04
(2.82-3.25)
4.43
(4.30-4.61)
6.47
(6.18-6.60)
656
12–19 years
5.73
(5.58-5.90)
3.74
(3.59-3.92)
5.65
(5.47-5.85)
9.06
(8.59-9.54)
1643
20–39 years
6.77
(6.62-6.93)
4.08
(3.88-4.24)
6.80
(6.60-6.93)
11.8
(10.9-12.5)
870
40–59 years
7.66
(7.38-7.94)
4.79
(4.47-5.08)
7.48
(7.18-7.89)
11.7
(11.3-12.4)
634
60 years and older
9.57
(9.03-10.1)
5.63
(5.35-6.21)
9.34
(8.61-10.1)
17.7
(16.1-19.4)
651
Males
Total, 3 years and older
6.98
(6.81-7.17)
3.76
(3.60-3.87)
7.02
(6.87-7.20)
12.4
(11.9-12.8)
2305
3–5 years
4.13
(3.97-4.29)
2.69†
(2.60-3.20)
4.11
(3.84-4.48)
5.68†
(5.26-6.40)
142
6–11 years
4.59
(4.47-4.71)
3.04
(2.80-3.37)
4.62
(4.42-4.77)
6.56
(6.42-7.11)
339
12–19 years
6.23
(6.07-6.40)
4.10
(3.92-4.22)
6.23
(6.01-6.42)
9.84
(9.07-10.7)
814
20–39 years
7.77
(7.54-8.02)
5.01
(4.66-5.32)
7.43
(7.18-7.76)
12.8
(11.9-14.8)
386
40–59 years
8.52
(8.17-8.89)
5.63
(5.27-6.22)
8.41
(8.04-8.91)
12.0
(11.4-14.5)
301
60 years and older
10.1
(9.53-10.7)
6.34
(5.58-6.73)
10.1
(9.19-10.6)
18.7
(16.5-20.3)
323
Females
Total, 3 years and older
5.72
(5.53-5.92)
3.43
(3.30-3.56)
5.65
(5.47-5.80)
10.0
(9.26-11.2)
2420
3–5 years
4.07
(3.78-4.39)
3.06†
(2.72-3.23)
4.01
(3.69-4.31)
5.83†
(4.89-8.23)
129
6–11 years
4.31
(4.18-4.44)
3.04
(2.82-3.23)
4.28
(4.12-4.46)
5.91
(5.77-6.38)
317
12–19 years
5.24
(5.07-5.40)
3.48
(3.31-3.69)
5.19
(5.01-5.41)
8.05
(7.65-8.31)
829
20–39 years
5.75
(5.60-5.90)
3.66
(3.51-3.90)
5.79
(5.52-5.93)
8.56
(8.15-9.20)
484
40–59 years
6.86
(6.54-7.19)
4.40
(3.92-4.82)
6.68
(6.35-7.08)
11.2
(9.70-13.7)
333
60 years and older
9.16
(8.46-9.92)
5.44
(5.14-5.88)
8.84
(8.01-9.97)
17.2
(15.0-21.6)
328
† Estimate is subject to greater uncertainty due to small cell size.
Geometric mean and selected percentiles of plasma concentrations (in µmol/L) for non-Hispanic blacks in the U.S.population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2002.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
5th
50th
95th
Males and Females
Total, 3 years and older
7.14
(6.95-7.33)
3.72
(3.58-3.84)
7.07
(6.84-7.29)
14.3
(13.3-14.9)
3777
3–5 years
4.16
(4.01-4.32)
2.82
(2.67-3.08)
4.08
(3.91-4.34)
6.18
(5.81-6.43)
246
6–11 years
4.43
(4.29-4.57)
2.99
(2.84-3.21)
4.42
(4.29-4.57)
6.43
(6.23-6.75)
621
12–19 years
5.96
(5.83-6.10)
3.73
(3.57-3.92)
5.92
(5.78-6.05)
9.66
(9.34-10.1)
1265
20–39 years
7.22
(7.03-7.42)
4.33
(4.12-4.43)
7.22
(7.00-7.46)
11.9
(11.3-12.8)
597
40–59 years
8.71
(8.33-9.09)
5.27
(4.87-5.66)
8.43
(8.08-8.83)
15.3
(13.7-18.8)
552
60 years and older
10.9
(10.5-11.3)
6.39
(6.12-6.67)
10.2
(9.86-10.8)
21.3
(18.9-25.9)
496
Males
Total, 3 years and older
7.68
(7.43-7.92)
3.83
(3.72-4.00)
7.77
(7.52-8.04)
15.2
(14.6-15.9)
1853
3–5 years
4.38
(4.17-4.60)
3.05†
(2.68-3.34)
4.27
(4.06-4.61)
6.38†
(5.79-6.57)
127
6–11 years
4.53
(4.38-4.69)
2.99
(2.81-3.39)
4.53
(4.38-4.64)
6.51
(6.23-6.80)
314
12–19 years
6.37
(6.22-6.52)
3.87
(3.69-4.08)
6.32
(6.16-6.44)
10.4
(9.70-11.0)
646
20–39 years
8.46
(8.18-8.74)
5.54
(5.34-5.91)
8.22
(7.96-8.59)
14.3
(11.9-15.5)
249
40–59 years
9.49
(9.03-9.97)
6.04
(5.32-6.45)
9.20
(8.62-9.54)
18.1
(14.7-20.2)
278
60 years and older
11.5
(11.0-12.0)
6.83
(6.13-7.33)
11.0
(10.2-11.9)
21.3
(18.4-25.9)
239
Females
Total, 3 years and older
6.71
(6.50-6.94)
3.60
(3.50-3.76)
6.59
(6.38-6.78)
12.8
(12.2-13.7)
1924
3–5 years
3.93
(3.72-4.16)
2.72†
(2.54-2.97)
3.85
(3.58-4.29)
5.85†
(5.13-6.39)
119
6–11 years
4.33
(4.18-4.47)
2.94
(2.71-3.21)
4.33
(4.18-4.47)
6.39
(5.90-6.81)
307
12–19 years
5.58
(5.41-5.75)
3.65
(3.46-3.82)
5.62
(5.45-5.77)
8.51
(7.92-9.32)
619
20–39 years
6.41
(6.18-6.64)
4.07
(3.70-4.33)
6.42
(6.18-6.75)
9.75
(9.08-10.0)
348
40–59 years
8.07
(7.67-8.50)
4.91
(4.63-5.33)
7.72
(7.38-8.48)
13.3
(11.7-19.2)
274
60 years and older
10.6
(10.1-11.1)
6.20
(5.89-6.62)
9.92
(9.55-10.5)
22.5
(17.5-27.7)
257
† Estimate is subject to greater uncertainty due to small cell size.
Geometric mean and selected percentiles of plasma concentrations (in µmol/L) for non-Hispanic whites in the U.S.population aged 3 years and older, National Health and Nutrition Examination Survey, 1999–2002.
Geometric mean (95% conf. interval)
Selected percentiles (95% conf. interval)
Sample size
5th
50th
95th
Males and Females
Total, 3 years and older
7.59
(7.47-7.71)
4.07
(3.97-4.19)
7.60
(7.48-7.74)
14.0
(13.4-14.4)
6192
3–5 years
4.30
(4.14-4.45)
2.74
(2.64-3.19)
4.28
(4.19-4.49)
6.19
(5.74-6.90)
229
6–11 years
4.56
(4.44-4.69)
3.14
(2.94-3.26)
4.51
(4.40-4.68)
6.94
(6.60-7.13)
497
12–19 years
5.99
(5.86-6.12)
3.83
(3.59-4.03)
5.89
(5.76-6.07)
9.54
(9.23-10.2)
1078
20–39 years
7.36
(7.24-7.49)
4.66
(4.37-4.83)
7.33
(7.16-7.49)
12.0
(11.5-12.4)
1383
40–59 years
8.31
(8.19-8.42)
5.30
(5.18-5.44)
8.17
(8.03-8.28)
13.4
(12.5-14.1)
1286
60 years and older
10.0
(9.74-10.3)
6.22
(6.12-6.44)
9.63
(9.33-9.92)
18.2
(17.4-19.0)
1719
Males
Total, 3 years and older
8.12
(7.99-8.25)
4.25
(4.15-4.38)
8.23
(8.11-8.38)
14.3
(13.9-14.8)
3026
3–5 years
4.39
(4.18-4.61)
3.10†
(2.44-3.48)
4.28
(4.20-4.56)
6.14†
(5.65-7.22)
120
6–11 years
4.62
(4.49-4.75)
3.15
(2.94-3.31)
4.55
(4.41-4.76)
6.91
(6.47-7.23)
264
12–19 years
6.28
(6.11-6.46)
3.95
(3.64-4.25)
6.19
(6.00-6.36)
9.72
(9.38-11.4)
534
20–39 years
8.21
(8.03-8.41)
5.62
(5.37-5.81)
8.10
(7.84-8.28)
12.4
(11.7-12.9)
577
40–59 years
9.10
(8.92-9.28)
6.31
(5.99-6.56)
8.91
(8.68-9.18)
13.8
(12.7-14.4)
668
60 years and older
10.7
(10.4-11.0)
6.88
(6.53-7.25)
10.3
(10.0-10.7)
18.2
(17.3-19.0)
863
Females
Total, 3 years and older
7.11
(6.97-7.25)
3.89
(3.69-4.07)
7.01
(6.89-7.14)
13.4
(12.8-14.2)
3166
3–5 years
4.20
(3.97-4.44)
2.71†
(2.06-3.19)
4.25
(4.04-4.59)
6.17†
(5.58-6.90)
109
6–11 years
4.50
(4.33-4.68)
3.11
(2.91-3.30)
4.47
(4.19-4.73)
6.94
(6.16-7.35)
233
12–19 years
5.70
(5.52-5.88)
3.68
(3.43-3.97)
5.63
(5.40-5.84)
9.09
(8.36-10.2)
544
20–39 years
6.61
(6.45-6.78)
3.90
(3.63-4.32)
6.52
(6.37-6.72)
11.2
(9.87-12.0)
806
40–59 years
7.57
(7.40-7.75)
4.97
(4.67-5.13)
7.36
(7.18-7.57)
12.9
(11.7-14.0)
618
60 years and older
9.53
(9.19-9.89)
6.04
(5.82-6.19)
9.09
(8.78-9.31)
18.2
(16.6-19.8)
856
† Estimate is subject to greater uncertainty due to small cell size.
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