有研究表明 ,血清促甲状腺素降低但甲状腺激素正常者常见 ,尤其多见于伴有甲状腺疾病病史的老年人。作者为评价亚临床甲状腺机能亢进对病死率的长期影响而进行研究。方法　对 1 1 91例未经甲状腺素或抗甲状腺药物治疗者的病死率进行研究。所有参加者的年龄≥ 60岁。 1 988年～ Studies have shown that serum thyroxine decreased but thyroid hormone is normal, especially in the elderly with a history of thyroid disease. The authors studied the long-term impact of subclinical hyperthyroidism on case-fatality rates. Methods The mortality of 1191 cases without thyroxine or antithyroid drugs was studied. All participants are ≥ 60 years of age. 1 988 ~