Table 1.
Content of the questionnaires.
Table 2.
Current use of medication for a thyroid disorder (question HEALTH66).
Fig 1.
Percentage of levothyroxine users per age group.
Table 3.
Incidence and prevalence of hypothyroidism (in number per 1000).
Fig 2.
Relationship between TSH and FT4 in participants with subclinical or overt hypothyroidism not using levothyroxine.
The line indicates the linear regression relationship. Note that 98.4% of the individuals with a TSH between 4.01 and 10.0 mIU/L had a normal FT4 concentration (>11 pmol/L).
Table 4.
Distribution of TSH class in participants according to levothyroxine use*.
Table 5.
Distribution of TSH class per age group (in %) in participants not using thyroid medication or amiodarone at baseline.