Table 1 Study group characteristics and blood Mn levels (μg/L) in participants ages 1 to 80 years; weighted statistics, NHANES 2011-2012 (n=7720)
Characteristics | n | Weighted % | GM blood Mn (μg/L) | AM blood Mn (μg/L) | 95% CI |
|---|---|---|---|---|---|
Total | 7720 | 100 | 9.3 | 9.9 | (9.8, 10.1) |
Sex | |||||
Male | 3857 | 48.7 | 8.7 | 9.2 | (9.0, 9.4) |
Female | 3863 | 51.3 | 9.9 | 10.6 | (10.4, 10.8) |
Age | |||||
<12 years | 1761 | 12.0 | 10.4 | 10.9 | (10.6, 11.2) |
12-80 years | 5959 | 88.0 | 9.2 | 9.8 | (9.6, 9.9) |
Educationa | |||||
Less than 9th grade | 453 | 5.6 | 9.2 | 10.0 | (9.4, 10.5) |
9 – 11th grade | 648 | 10.4 | 9.3 | 9.9 | (9.5, 10.3) |
High school grade/GED or equivalent | 1027 | 20.4 | 8.8 | 9.3 | (9.0, 9.6) |
Some college or AA degree | 1461 | 32.1 | 9.1 | 9.7 | (9.4, 10.0) |
College graduate or above | 1239 | 31.5 | 9.2 | 9.7 | (9.4, 10.1) |
Missing | 2 | - | |||
PIR | |||||
< 0.9 | 1920 | 17.1 | 9.6 | 10.3 | (9.9, 10.6 |
0.9-1.65 | 1738 | 19.0 | 9.4 | 10.3 | (10.1, 10.5 |
1.66-3.64 | 1772 | 27.3 | 9.4 | 9.9 | (9.6, 10.2 |
≥ 3.65 | 1788 | 36.6 | 9.1 | 9.6 | (9.4, 9.8) |
Missing | 502 | - | |||
Race/ethnicity | |||||
Non-Hispanic White | 2411 | 63.6 | 9.1 | 9.6 | (9.4, 9.8) |
Non-Hispanic Black | 2162 | 12.2 | 8.3 | 8.9 | (8.7, 9.1) |
Mexican-American | 1058 | 9.6 | 10.7 | 11.3 | (11.0, 11.6) |
Other Hispanic | 820 | 6.8 | 10.0 | 10.5 | (9.9, 11.1) |
Asian | 975 | 4.8 | 11.9 | 12.6 | (12.2, 13.0) |
Other/multiracial | 294 | 3.0 | 10.1 | 10.6 | (9.9, 11.3) |
BMIb | |||||
Underweight | 197 | 2.2 | 9.3 | 9.8 | (8.9, 10.6) |
Normal | 3184 | 37.6 | 9.4 | 10.0 | (9.8, 10.2) |
Overweight | 1928 | 29.7 | 9.1 | 9.6 | (9.4, 9.8) |
Obese | 2192 | 30.5 | 9.4 | 10.1 | (9.8, 10.3) |
Missing | 219 | - | |||
Pregnancy statusc | |||||
Pregnant women | 51 | 4.7 | 11.9 | 12.5 | (11.3, 13.8) |
Non preg./could not ascertain | 1034 | 95.3 | 10.2 | 10.8 | (10.5, 11.2) |
Menopausal statusd | |||||
Premenopausal | 1374 | 56.9 | 10.1 | 10.8 | (10.5, 11.1) |
Postmenopausal | 1087 | 43.1 | 9.2 | 9.8 | (9.4, 10.2) |