title: Incidence of hyperthyroidism in Stockholm, Sweden, 2003-2005.
abstract: OBJECTIVE
  To investigate the incidence of hyperthyroidism in Stockholm County, in those patients who were diagnosed with hyperthyroidism for the first time during the years 2003-2005.
  
  
  METHODS
  All new cases of hyperthyroidism > or = 18 years of age were prospectively registered to calculate the total incidence of hyperthyroidism, as well as the incidence of the subgroups: Graves' disease (GD), toxic multinodular goitre and solitary toxic adenoma (STA). Eight specialized units/hospitals in Stockholm County participated in the registration. The participating physicians were all specialists in medical endocrinology, oncology, nuclear medicine or surgery.
  
  
  RESULTS
  During a 3-year period, 1431 new patients of hyperthyroidism were diagnosed in a well-defined adult population (> 18 years of age) of in average 1,457,036 inhabitants. This corresponds to a mean annual incidence of hyperthyroidism of 32.7/100,000. The incidence of GD was 24.5/100,000 per year, toxic nodular goitre was 3.3/100,000 per year and STA was 4.9/100,000 per year.
  
  
  CONCLUSIONS
  The total incidence of hyperthyroidism in Stockholm County was found to be 32.7/100,000 per year, of which 75% had GD. There were a higher percentage of smokers among the patients with hyperthyroidism compared with the overall population in Stockholm, but no difference in the frequency of smoking between patients with GD and toxic nodular goitre.
authors.affiliation: Division of Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, SE-17176 Stockholm, Sweden. mirna.nordling@ds.se
authors.forename: Mirna
authors.initials: M
authors.lastname: Abraham-Nordling
authors.forename: Ove
authors.initials: O
authors.lastname: Törring
authors.forename: Mikael
authors.initials: M
authors.lastname: Lantz
authors.forename: Bengt
authors.initials: B
authors.lastname: Hallengren
authors.forename: Hans
authors.initials: H
authors.lastname: Ohrling
authors.forename: Göran
authors.initials: G
authors.lastname: Lundell
authors.forename: Jan
authors.initials: J
authors.lastname: Calissendorff
authors.forename: Gun
authors.initials: G
authors.lastname: Jörneskog
authors.forename: Göran
authors.initials: G
authors.lastname: Wallin
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D006980:Hyperthyroidism / Q000453:epidemiology*; D015994:Incidence; D008297:Male; D008875:Middle Aged; D017678:Sex Distribution; D013548:Sweden / Q000453:epidemiology