Table 1.

Baseline characteristics of 643 patients with myositis who completed Delphi survey. P values were generated by ANOVA.

CharacteristicUSA, n = 543Sweden, n = 49South Korea, n = 51Total, n = 643p
Age, yrs, mean ± SD54.2 ± 13.062.6 ± 11.849.7 ± 14.154.5 ± 13.30.001
Female, n (%)446 (82.1)36 (73.5)40 (78.4)522 (81.2)0.289
DM, n (%)283 (52.1)26 (53.1)44 (86.3)353 (54.9)< 0.001
Disease duration, yrs, mean ± SD7.9 ± 7.310.1 ± 10.17.8 ± 7.38.1 ± 7.80.170
  • DM: dermatomyositis.