Table 2

 Demographic features of patients who were followed up during each of six 5-year time periods

1972–61977–811982–61987–911992–61997–2001
SSc, systemic sclerosis.
At risk (n)221493768115314601508
    Female sex (%)798082828183
    Age (at onset of time period; years)48*5051515255†
    Disease duration at the beginning of the interval (years)8.48.49.210.611.213.9†
SSc subtype
    Diffuse SSc (%)414649474844
Deaths
    All deaths, n (%)42 (19)105 (21)148 (19)211 (18)289 (20)314 (24)
Deaths due to SSc (% of all deaths)706858535750