Table 1.

Demographics of the Sample Population

CharacteristicSubclincal Hypothyroidism(n = 215) No. (%)Control (n = 8,013) No. (%)PValue
Note: Percentages are weighted totals using SUDAAN to account for the complex sampling design of the NHANES III.
Sex<.01
    Male72 (27.4)3,890 (47.9)
    Female143 (72.6)4,123 (52.1)
Race<.01
    Non-Hispanic white142 (90.0)4,025 (80.5)
    Non-Hispanic black20 (3.2)1,916 (9.1)
    Mexican-American43 (3.0)1,751 (3.5)
    Other10 (3.8)321 (6.9)
Age<.01
    40–49 y29 (23.0)2,294 (37.9)
    50–59 y35 (17.3)1,580 (24.1)
    60–69 y45 (23.4)1,865 (20.4)
    70–79 y64 (27.7)1,338 (12.8)
>80 y42 (8.6)936 (4.8)