Table 4 Univariate analysis of the MYOACT total

Extramuscular activity in MYOACT

0.475

0.438–0.511

< 0.001

Physician global activity

0.469

0.432–0.5007

< 0.001

MMT-8

−0.045

−0.056 to −0.034

< 0.001

MYOACT muscular (0–10)

0.449

0.409–0.489

< 0.001

Patient global activity (0–10)

0.353

0.313–0.394

< 0.001

Creatine phosphokinase (U/L)

0.0002

4.51e-05–0.000314

0.009

Health Assessment Questionnaire (0–3)

0.845

0.688–1.002

< 0.001

Myositis Damage Index (0–10)

0.378

0.332–0.424

< 0.001

Physician global damage (0–10)

0.347

0.297–0.396

< 0.001

Patient global damage (0–10)

0.230

0.185–0.274

< 0.001

SF-12 physical domain score (0–100)

−0.046

−0.055 to −0.036

< 0.001

SF-12 mental domain score (0–100)

−0.018

−0.028 to −0.008

< 0.001

Prevalent group

−0.666

−0.966 to −0.365

< 0.001

Antisynthetase AAb group

−0.319

−0.588 to −0.050

0.020