Journal of Peking University (Health Sciences) ›› 2022, Vol. 54 ›› Issue (6): 1224-1228. doi: 10.19723/j.issn.1671-167X.2022.06.028

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靓 罗1,2,青猛 蔡1,香君 刘1,泽霖 贠1,春 李1,晓盈 张1,*()   

  • Received:2022-08-22 Online:2022-12-18 Published:2022-12-19
  • Contact: 晓盈 张 E-mail:zhangxiaoying@pkuph.edu.cn
  • Supported by:
    China International Medical Foundation(Z-2018-40-2101);Peking University People's Hospital Scientific Research Development Funds(RDE 2021-18)

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CLC Number: 

  • R593.25

Table 1

Comparisons of demographic characteristics between the two groups"

Variables RP onset group (n=196) NRP onset group (n=105) Z/t/χ2 P
Female, n (%) 169 (86.2) 88 (83.8) 0.319 0.572
Age at onset/years, $\bar x \pm s$ 42.4±15.5 46.1±14.6 -2.064 0.040
Duration/months, M (P25, P75) 78.0 (29.0, 176.5) 52.0 (21.5, 124.5) -1.792 0.073
Smoking, n (%) 29 (14.8) 23 (21.9) 2.418 0.120
SLE, n (%) 15 (7.7) 4 (3.8) 1.708 0.191
RA, n (%) 16 (8.2) 6 (5.7) 0.605 0.437
Inflammatory myopathy, n (%) 6 (3.1) 3 (2.9) 0.000 >0.999
Hypertension, n (%) 44 (22.4) 26 (24.8) 0.205 0.651
Diabetes, n (%) 8 (4.1) 10 (9.5) 3.602 0.058
Hyperlipidemia, n (%) 16 (8.2) 9 (8.6) 0.015 0.903

Table 2

Comparison of clinical manifestations between the two groups [n(%)]"

Variables RP onset group (n=196) NRP onset group (n=105) χ2 P
Skin manifestations
  Skin hardening/thickening 174 (88.8) 99 (94.3) 2.461 0.117
  Loss of digital pad tissue 26 (13.3) 5 (4.8) 5.351 0.021
Bones/muscles manifestations
  Muscle pain 34 (17.3) 20 (19.0) 0.134 0.714
  Joint swelling 59 (30.1) 34 (32.4) 0.166 0.683
  Arthralgia 93 (47.4) 57 (54.3) 1.278 0.258
Vascular manifestations
vFingertip ulcers 49 (25.0) 15 (14.3) 4.688 0.030
  Digital gangrene 7 (3.6) 0 N/A 0.101
Cardiopulmonary system manifestations
  Palpitations 22 (11.2) 14 (13.3) 0.289 0.591
  ILD 92 (46.9) 32 (30.5) 7.649 0.006
  PAH 39 (19.9) 10 (9.5) 5.399 0.020
Digestive involvement
  Reflux/Heartburn 87 (44.4) 40 (38.1) 1.110 0.292
  Stomach fullness 26 (13.3) 6 (5.7) 4.103 0.043
  Intermittent abdominal pain 13 (6.6) 3 (2.9) 1.936 0.164
Renal involvement
  Proteinuria 14 (7.1) 7 (6.7) 0.024 0.877
  Microscopic hematuria 4 (2.0) 3 (2.9) 0.002 0.963
  Renal crisis 3 (1.5) 1 (1.0) 0.000 >0.999

Table 3

Comparison of laboratory indexes between the two groups"

Variables RP onset group (n=196) NRP onset group (n=105) Z/t/χ2 P
TC/(mmol/L), M (P25, P75) 4.35 (3.55, 5.13) 4.40 (3.70, 5.13) -1.016 0.310
TG/(mmol/L), M (P25, P75) 1.55 (1.07, 2.15) 1.44 (1.04, 2.19) -0.349 0.727
HDL-C/(mmol/L), $\bar x \pm s$ 1.13 ± 0.36 1.13 ± 0.31 -0.062 0.951
LDL-C/(mmol/L), $\bar x \pm s$ 2.54 ± 0.80 2.74 ± 0.75 -2.205 0.028
ALT/(U/L), M (P25, P75) 16.0 (11.0, 23.0) 15.0 (11.0, 21.5) -0.764 0.445
AST/(U/L), M (P25, P75) 22.0 (17.0, 26.0) 20.0 (15.0, 25.0) -1.180 0.238
Scr/(μmol/L), M (P25, P75) 61.5 (49.0, 69.8) 59.0 (53.0, 70.0) -0.038 0.970
ESR/(mm/h), M (P25, P75) 16.0 (8.0, 25.8) 15.0 (8.0, 23.0) -1.141 0.254
CRP/(mg/L), M (P25, P75) 3.1 (1.2, 7.3) 3.2 (1.5, 7.3) -0.275 0.784
ANA positive, n (%) 190 (96.9) 97 (92.4) 2.257 0.133
Anti-Scl-70 positive, n (%) 65 (33.2) 23 (21.9) 4.189 0.041
Anti-RNP positive, n (%) 30 (15.3) 16 (15.2) 0.000 0.988
Low C3, n (%) 45 (23.0) 22 (21.0) 0.159 0.690
Low C4, n (%) 41 (20.9) 23 (21.9) 0.040 0.842
IgA elevated, n (%) 54 (27.6) 22 (21.0) 1.577 0.209
IgG elevated, n (%) 38 (19.4) 26 (24.8) 1.180 0.277
IgM elevated, n (%) 38 (19.4) 16 (15.2) 0.800 0.371

Table 4

Binary logistic analysis results of factors related to RP onset of SSc"

VariablesUnivariate Multivariate
B Wald P OR (95%CI) B Wald P OR (95%CI)
Age at onset -0.016 4.024 0.045 0.984 (0.968-1.000)
Diabetes -0.906 3.406 0.065 0.040 (0.154-1.158)
Loss of digital pad tissue 1.118 4.915 0.027 3.059 (1.138-8.219) 1.290 6.103 0.013 3.634 (1.306-10.118)
Fingertip ulcers 0.693 4.576 0.032 2.000 (1.060-3.774)
ILD 0.702 7.534 0.006 2.018 (1.222-3.332) 0.679 6.688 0.010 1.972 (1.179-3.299)
PAH 0.859 5.172 0.023 2.360 (1.126-4.946)
Stomach fullness 0.926 3.875 0.049 2.524 (1.004-6.343)
Anti-Scl-70 positive 0.570 4.135 0.042 1.769 (1.021-3.066) 0.596 4.211 0.040 1.814 (1.027-3.205)
Low LDL-C -0.330 4.548 0.033 0.719 (0.531-0.974) -0.403 5.979 0.014 0.668 (0.484-0.923)
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