1-11 Years
12-19 Years
20-64 Years
65+ Years
N
%
N
%
N
%
N
%
Total
3204
100.0
2118
100.0
7720
100.0
2770
100.0
Male
1651
51.5
1136
53.6
3708
48.0
1382
49.9
Female
1553
48.5
982
46.4
4012
52.0
1388
50.1
Non-Hispanic White
996
31.1
683
32.2
3390
43.9
1712
61.8
Non-Hispanic Black
686
21.4
479
22.6
1455
18.8
414
14.9
Hispanics
1332
41.6
837
39.5
2471
32.0
546
19.7
Other race/ethnicities
190
5.9
119
5.6
404
5.2
98
3.5
Obese*
540
16.9
426
20.1
2940
38.1
967
34.9
Not Obese*
2350
73.3
1650
77.9
4719
61.1
1739
62.8
Nonsmoker**
1857
87.7
5434
70.4
2381
86.0
Smoker**
258
12.2
2270
29.4
383
13.8
*May not sum to 100% because of missing values for obesity status
**May not sum to 100% because of missing values for smoking status
Table 1: Unweighted sample sizes by age, gender, race/ethnicity, obesity and smoking statuses. Data from National Health and Nutrition Examination Survey for 2007-2010
Age: 1-11 Years
Age: 12-19 Years
Age: 20-64 Years
Age: 65+ Years
β (SE, p)
β (SE, p)
β (SE, p)
β (SE, p)
Age
-0.00832 (0.001, <0.01)
0.00008 (0.003, 0.98)
0.00065 (0, 0.01)
-0.0001 (0.001, 0.92)
Poverty Income Ratio
0.00547 (0.002, 0.01)
0.01274 (0.003, <0.01)
0.00518 (0.001, <0.01)
0.00863 (0.003, 0.01)
Log10(calcium in mmol/L)
1.24702 (0.294, <0.01)
0.9036 (0.23, <0.01)
1.66821 (0.262, <0.01)
Log10(phosphorus in mmol/L)
0.07883 (0.084, 0.35)
0.08115 (0.039, 0.04)
0.13577 (0.07, 0.06)

Table 2: Regression slopes, β (for dependent variable: log10 transformed values of 25OHD in nmol/L) with standard errors and p-values for continuous variables by age groups. Data from National Health and Nutrition Examination Survey 2007-2010

Children aged 1-11 Years
Adolescents aged 12-19 Years
AGM (95% CI)
Statistically Significant Differences
AGM (95% CI)
Statistically Significant Differences
Gender
Male (M)
65.4(63.6 - 67.2)
M > F (p<0.01)
51.7(49 - 54.6)
M > F (p=0.01)
Female (F)
63.2(61.4 - 65.1)
48.8(45.7 - 52.1)
Race/ethnicity
Non-Hispanic White (NHW)
76.6(73.5 - 79.9)
NHW > NHB (p<0.01), NHW > HISP (p<0.01), NHW > OTH (p<0.01)
68(64.4 - 71.9)
NHW > NHB (p<0.01), NHW > HISP (p<0.01), NHW > OTH (p<0.01)
Non-Hispanic Black (NHB)
55.8(53.6 - 58.2)
NHB < HISP (p<0.01), NHB < OTH (p<0.01)
38(34.9 - 41.4)
NHB < HISP (p<0.01), NHB < OTH (p<0.01)
Hispanics (HISP)
62.7(61.1 - 64.4)
50.8(47.7 - 54)
Others (OTH)
63.6(59 - 68.6)
48.4(43.7 - 53.7)
Gender and Race/ethnicity
M_NHW
66.8(62.9 - 71)
M_NHW > M_NHB (p<0.01), M_NHW > M_HISP (p<0.01), M_NHW > M_OTH (p<0.01), M_NHB < M_HISP (p<0.01), M_NHB < M_OTH (p<0.01), M_HISP > M_OTH (p<0.01)
M_NHB
41.1(37.7 - 44.7)
M_NHB > F_NHB (p<0.01)
M_HISP
54.3(51.4 - 57.2)
M_HISP > F_HISP (p<0.01)
M_OTH
48(44 - 52.3)
F_NHW
69.2(65.1 - 73.6)
F_NHW > F_NHB (p<0.01), F_NHW > F_HISP (p<0.01), F_NHW > F_OTH (p<0.01), F_NHB < F_HISP (p<0.01), F_NHB < F_OTH (p<0.01)
F_NHB
35.2(31.8 - 39)
F_HISP
47.5(43.9 - 51.4)
F_OTH
48.9(41.6 - 57.5)
Obesity
Not Obese (NOB)
66.8(65.2 - 68.4)
NOB > OB (p<0.01)
53.8(51 - 56.7)
NOB > OB (p<0.01)
Obese (OB)
61.9(59.9 - 63.9)
46.9(43.9 - 50)
Smoking Status
Non-smoker (NSM)
49.5(47.4 - 51.7)
Smoker (SM)
50.9(46.6 - 55.6)

Table 3: Adjusted geometric means (AGM) with 95% confidence intervals in nmol/L for 25-hydroxyvitamin D by gender, race/ethnicity, and obesity for children aged 1-11 years and adolescents aged 12-19 years. Data from National Health and Nutrition Examination Survey 2007-2010

Adults aged 20-64 Years
Seniors aged 65+ Years
AGM (95% CI)
Statistically Significant Differences
AGM (95% CI)
Statistically Significant Differences
Gender
Male (M)
50.2(48.1 - 52.4)
53.7(50.6 - 57)
Female (F)
50.4(48.5 - 52.4)
52.4(48.7 - 56.4)
Race/ethnicity
Non-Hispanic White (NHW)
66.6(64.7 - 68.6)
NHW > NHB (p<0.01), NHW > HISP (p<0.01), NHW > OTH (p<0.01)
62.9(59.4 - 66.7)
NHW > NHB (p<0.01), NHW > HISP (p<0.01), NHW > OTH (p=0.04)
Non-Hispanic Black (NHB)
38.7(36.1 - 41.4)
NHB < HISP (p<0.01), NHB < OTH (p<0.01)
44.3(40.8 - 48.2)
NHB < HISP (p<0.01), NHB < OTH (p=0.02)
Hispanics (HISP)
51.2(49.2 - 53.3)
53.3(50.1 - 56.6)
Others (OTH)
48.7(45.5 - 52.1)
53.4(45.8 - 62.1)
Obesity
Not Obese (NOB)
53(51.1 - 55)
NOB > OB (p<0.01)
54.8(51.5 - 58.4)
Obese (OB)
47.8(45.8 - 49.9)
51.4(47.2 - 55.9)
Smoking Status
Non-smoker (NSM)
51.5(49.8 - 53.2)
NSM > SM (p<0.01)
57.8(55 - 60.6)
NSM > SM (p<0.01)
Smoker (SM)
49.2(47.1 - 51.5)
48.8(44.2 - 53.7)
Gender and Race/ethnicity
M_NHW
65.5(63.5 - 67.6)
M_NHW > M_NHB (p<0.01), M_NHW > M_HISP (p<0.01), M_NHW > M_OTH (p<0.01), M_NHB < M_HISP (p<0.01), M_NHB < M_OTH (p<0.01), M_HISP > M_OTH (p<0.01), M_HISP < M_OTH (p<0.01), M_NHW < F_NHW (p=0.04)
M_NHB
38.9(35.9 - 42.2)
M_HISP
53.4(51.1 - 55.8)
M_HISP > F_HISP (p<0.01)
M_OTH
46.7(42.8 - 50.9)
F_NHW
67.8(65.4 - 70.2)
F_NHW > F_NHB (p<0.01), F_NHW > F_HISP (p<0.01), F_NHW > F_OTH (p<0.01), F_NHB < F_HISP (p<0.01), F_NHB < F_OTH (p<0.01)
F_NHB
38.4(35.9 - 41.1)
F_HISP
49.1(46.9 - 51.3)
F_OTH
50.7(46.9 - 54.9)
Gender and obesity
M_NOB
52(49.9 - 54.2)
M_NOB > M_OB (p<0.01)
M_OB
48.5(46.2 - 50.9)
M_NOB > F_NOB (p<0.01)
F_NOB
54.1(52 - 56.2)
F_NOB > F_OB (p<0.01)
F_OB
47.1(45 - 49.3)
Gender and Smoking
M_NSM
50.8(48.9 - 52.8)
M_SM
49.6(47.2 - 52.2)
F_NSM
52.2(50.3 - 54.1)
F_NSM > M_NSM (p<0.01)
F_SM
48.8(46.5 - 51.2)
Race/ethnicity and obesity
NHW_NOB
72.6(70.6 - 74.6)
NHW_NOB > NHW_OB (p<0.01), NHW_NOB > NHB_NOB (p<0.01), NHW_NOB > HISP_NOB (p<0.01), NHW_NOB > OTH_NOB (p<0.01)
67.9(64.5 - 71.5)
NHW_NOB > NHW_OB (p<0.01), NHW_NOB > NHB_NOB (p<0.01), NHW_NOB > HISP_NOB (p<0.01), NHW_NOB > OTH_NOB (p<0.01)
NHW_OB
61.2(59 - 63.4)
NHB_NOB > NHB_OB (p<0.01), NHW_OB > NHB_OB (p<0.01), NHW_OB > HISP_OB (p<0.01), NHW_OB > OTH_OB (p<0.01)
58.4(54.4 - 62.6)
NHW_OB < NHB_OB (p<0.01), NHW_OB > HISP_OB (<0.01)
NHB_NOB
40.5(37.8 - 43.4)
NHB_NOB < HISP_NOB (p<0.01), NHB_NOB < OTH_NOB (p<0.01)
47(42.7 - 51.7)
NHB_NOB > NHB_OB (p=0.03), NHB_NOB < HISP_NOB (p<0.01)
NHB_OB
36.9(34.2 - 39.8)
NHB_OB < HISP_OB (p<0.01), NHB_OB < OTH_OB (p<0.01)
41.8(37.8 - 46.3)
NHB_OB < HISP_OB (p<0.01), NHB_OB < OTH_OB (p=0.049)
HISP_NOB
54(51.7 - 56.4)
HISP_NOB > HISP_OB (p<0.01), HISP_NOB < OTH_NOB (p=0.04)
54.2(51 - 57.7)
HISP_OB
48.5(46.5 - 50.7)
52.4(48.2 - 56.9)
OTH_NOB
49.8(46.4 - 53.4)
52.3(45.4 - 60.2)
OTH_OB
47.6(43.3 - 52.4)
54.5(42 - 70.6)

Table 4: Adjusted geometric means (AGM) with 95% confidence intervals in nmol/L for 25-hydroxyvitamin D by gender, race/ethnicty, and obesity for those aged >= 20 years. Data from National Health and Nutrition Examination Survey 2007-2010