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[Hormone replacement therapy in Iceland.]
Objective:
The aim of this study was to investigate the use of hormone replacement therapy (HRT) in Iceland in 1979-1995.
Material And Methods:
The data used were based on answers to a questionnaire for women who attended screening for cervical and breast cancer at the Cancer Detection Clinic of the Icelandic Cancer Society. More than 95% of all Icelandic women in the age groups investigated attended screening during the period and participated in the study.
Results:
Use of HRT increased for each new and younger birth cohort and in the youngest cohort 52% had ever used HRT. The use was most common in the age group 50-55 and 50% of these women were using HRT at time of attendance in 1995 which is 5.7 fold increase from 1986 (p<0.001). Among users, 52% had used HRT for one year or less in 1979-1989 and 41% in 1990-1995 (p<0.001). In the latter period, 27% had used HRT for more than five years. Users of HRT were more likely to be smokers than non users (p<0.001).
Conclusion:
Use of HRT is common in Iceland and has been increasing during the period 1979-1995.
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