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A multicentre cohort of 513 clinic attenders with systemic lupus erythematosus (SLE) was retrospectively identified, representing 4185 patient-years of follow-up. Expected numbers of death were calculated by means of age- and sex-specific mortality rates of the general Danish population. The observed number of deaths was 122. The survival rates were 97%, 91%, 76%, 64% and 53% after 1, 5, 10, 15, and 20 years respectively. The overall mortality rate was 2.9% per year (95% CI 2.4-3.5), and the standardized mortality rate (SMR) was 4.6 (95% CI 3.8-5.5). The causes of death included active SLE (n = 19), end stage organ failure due to SLE (n = 16), infections (n = 25), malignancy (n = 9), cardiovascular disease (n = 32), and other causes (n = 21). SLE was directly related to one third of the excess mortality. In conclusion, SLE patients in the present cohort had a 4.6-fold increased mortality compared with the general population and half of the deaths were caused by SLE manifestations or infections, especially in young patients during the early period of the disease.

Original publication

DOI

10.1080/030097499442522

Type

Journal article

Journal

Scand J Rheumatol

Publication Date

1999

Volume

28

Pages

75 - 80

Keywords

Adolescent, Adult, Age Distribution, Age of Onset, Aged, Aged, 80 and over, Bacterial Infections, Cause of Death, Child, Child, Preschool, Cohort Studies, Denmark, Female, Follow-Up Studies, Humans, Lupus Erythematosus, Systemic, Male, Middle Aged, Poisson Distribution, Retrospective Studies, Sex Distribution, Survival Analysis