Skip to main content

Table 2 Demographic characteristics of survival and non-survival groups during follow-up

From: Clinical characteristics and favorable long-term outcomes for patients with idiopathic inflammatory myopathies: a retrospective single center study in China

Variables Non-survival group Survival group P values
No. of patients (%) 32(17.0) 156(83.0)  
Sex, no. (%)    
   Male: female ratio 01:01.9 01:02.1 0.837
Classification of diagnosis    
   PM 5(15.6) 37(23.7) 0.363
   DM 20(62.5) 80(51.3) 0.331
   ADM 4(12.5) 9(5.8) 0.241
   OM 2(6.25) 24(15.4) 0.261
   JM 1(3.13) 6(3.9) 1
Mean age ± S.D at onset (year) 52.9 ± 15.8 41.9 ± 15.2 0
Disease duration from onset to diagnosis, median (IQR) year 3.8(2, 12.8) 6.5(3, 12) 0.215
Skin ulcers, (%) 6(18.8) 15(9.6) 0.212
Complicated with ILD at disease course, (%) 17(53.1) 75(48.1) 0.558
Complicated with PAH at disease course, (%) 3(9.4) 17(10.9) 1
Complicated with malignancy, (%)e 7(21.9) 4(2.6) 0
Complicated with dysphagia at disease course, (%) 8(25.0) 67(42.9) 0.074
Cardiac involvement at disease course, (%) 17(53.1) 47(30.1) 0.023
Raynaud phenomenon at disease course, (%) 4(12.5) 25(16.0) 0.79
Low TP level† at diagnosis, (%) 10(31.3) 24(2.6) 0.044
Low ALB levels† at diagnosis, (%) 16(50.0) 46(29.5) 0.038
Elevated IgG†† at diagnosis, (%) 8(25) 47(30.1) 0.672
Elevated IgA†† at diagnosis, (%) 9(28.1) 25(15.4) 0.122
Elevated IgM†† at diagnosis, (%) 5(15.6) 20(12.8) 0.775
Creatine kinase at initial visit in our center, median (IQR) 260.5
(71.8, 1173.8)
491.5
(83.3, 1613.5)
0.489
Autoantibodies positive at disease course, (%)    
   ANA positive 16(50.0) 85(54.5) 0.699
   Anti-RNP positive 4(12.5) 13(8.3) 0.497
   Anti-Jo-1 positive 0(0.0) 24(15.4) 0.016
   Anti-SSA positive 2(6.3) 33(21.2) 0.048
MYOACT global disease activity, 10-cm VAS score at disease onset 6.21 ± 2.61 6.64 ± 2.60 0.408
MYOACT muscle disease activity, 10-cm VAS score at disease onset 7.09 ± 1.34 6.91 ± 1.3 0.47
MYOACT, subscale VAS score > 0 at disease onset    
   Constitutional 25(78.1) 129(82.7) 0.614
   Cutaneous 25(78.1) 111(71.2) 0.518
   Skeletal 10(31.3) 42(26.9) 0.666
   Gastrointestinal 9(28.1) 57(36.5) 0.421
   Pulmonary 4(12.5) 12(7.7) 0.483
   Cardiac 9(28.1) 35(22.4) 0.497
  1. †refers to values that are below the lower limit of normal laboratory assay standards.
  2. ††refers to values that are higher than the upper limit of normal laboratory assay.
  3. ANA, antinuclear antibody; RNP, ribonucleoprotein; SSA: Sjögren's syndrome antigen.