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. 2015 Jul 31;10(7):e0133688. doi: 10.1371/journal.pone.0133688

Table 7. Demographics for National Health and Nutrition Examination Survey (NHANES) based on laboratory hypothyroidism.

No Hypothyroidism (N = 3091) Hypothyroidism (N = 661)
Mean Standard Deviation Mean Standard Deviation P value
Age (years) 56.39 10.62 60.07 12.75 <0.001
Gender,female % 48.49 71.6 <0.001
Race, % 0.3109
 Mexican 5.83 5.14
 Other Hispanic 4.30 3.08
 Non-Hispanic white 74.21 74.13
 Non-Hispanic black 10.02 12.44
 Other and multiracial 5.65 5.21
Education, % 0.5566
 <9th Grade 8.35 8.18
 > = 9th Grade, <HS graduate 12.65 13.61
 HS graduate or GED equivalent 25.92 27.89
 Some college 26.35 26.94
College graduate and beyond 26.73 23.38
Income, % 0.1964
 <$20,000 14.73 18.26
 $20,000-$44,999 27.00 29.83
 $45,000-$74,999 20.34 18.97
 $75,000 and up 34.26 28.85
 >$20,000 3.66 4.09
Glaucoma, % 4.62 5.35 0.3309
Diabetes, % 0.0041
 Yes 11.41 17.21
 Borderline 2.15 1.16
Hypertension, % 40.75 49.13 0.0015
Stroke, % 4.05 7.77 0.0005
BMI 28.78 5.71 29.75 6.81 0.0006
Smoking, % 0.3842
 Never 49.92 53.97
 Current 19.40 18.72
 Past 30.68 27.31
Alcohol, % 0.0435
 0 41.6 51.63
 >0 and <1 43.41 38.66
 ≧1 and <2 7.85 5.69
 ≧2 and <3 5.11 2.92
 ≧4 2.03 1.09
Genral Health Condition, % 0.0114
 Excellent-Good 42.64 32.74
 Fair 38.54 39.17
 Poor 18.82 28.09

All means, proportions, and standard erros are weighted estimates of the U.S. population characteristics, taking into account NHIS’s complex sampling design.