Table 1.

Comparison of demographic information between patients with polymyositis/dermatomyositis (PM/DM) and controls.

CharacteristicPM/DM, n = 46Controls, n = 21p
Age, yrs31.1 ± 12.135.0 ± 6.70.90
Sex, male/female15/3110/110.752
Body mass index, kg/m222.88 ± 3.8022.88 ± 2.260.185
Heart rate, bpm79.35 ± 10.5369.43 ± 6.310.062
Systolic blood pressure, mm Hg121.59 ± 9.88118.24 ± 9.140.193
Diastolic blood pressure, mm Hg76.70 ± 8.1468.52 ± 7.100.074