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Table 4 Comparison of selected characteristics between perfect and imperfect responders

From: Factors associated with diagnostic stage of hip osteoarthritis due to acetabular dysplasia among Japanese female patients: a cross-sectional study

Characteristics No. of missing data n (%) or median (range) P
Perfect responders (N = 234) Imperfect responders (N = 102)
Age (years) 0 56.0 (23.2–84.5) 59.3 (24.1–82.0) 0.02
Height (cm) 0 154 (138–173) 153 (135–172) 0.09
Weight at age 20 (kg) 16 50 (36–85) 48 (37–70) 0.30
Weight change since age 20 (kg) 16 4 (−28–40) 3.5 (−14–35) 0.51
Weight at diagnosis (kg) 0 54 (31–88) 52 (35–105) 0.02
Body mass index at age 20 (kg/m2) 16 20.9 (16.4–35.8) 20.8 (15.8–28.8) 0.64
Body mass index change since age 20 (kg/m2) 16 1.6 (−13.0–16.7) 1.4 (−6.3–14.3) 0.50
Body mass index at diagnosis (kg/m2) 0 22.9 (15.8–38.1) 22.05 (17.8–43.1) 0.18
Smoking Never 2 188 (80) 77 (77) 0.69
Past   25 (11) 11 (11)  
Current   21 (9) 12 (12)  
Consumption of alcohol Never 3 141 (60) 61 (62) 0.95
Past   11 (5) 4 (4)  
Current   82 (35) 34 (34)  
Education Junior high school 3 32 (14) 14 (14) 0.95
High school   132 (56) 54 (55)  
Junior college or higher   70 (30) 31 (31)  
Parity Present 2 189 (81) 80 (80) 0.87
Clinical information     
Involved side Hemilateral 0 100 (43) 41 (40) 0.66
  Bilateral   134 (57) 61 (60)  
Radiographic index of acetabular dysplasia     
  Sharp angle 81 46 (27–58) 45 (39–54) 0.81
  Acetabular roof obliquity angle 84 23 (0–53) 25 (12.5–43.0) 0.48
  Acetabular head index (%) 83 65.6 (35.7–105.7) 65 (40.9–85.7) 0.77
Duration since symptom onset (years) 6 1.5 (0–40.0) 2.0 (0–43.0) <0.01
Disease stage at OA diagnosis     
  Pre-OA 0 39 (17) 4 (4) <0.01
  Initial stage   37 (16) 11 (11)  
  Advanced stage   77 (33) 18 (18)  
  Terminal stage   81 (35) 69 (68)  
  1. *P value was calculated by Wilcoxon rank sum test for continuous variables or the Chi-square test for categorical variables