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Table 4 Mediation analysis of self-management behaviors and perceived social support for participants (N = 140)

From: Mediating effect of self-efficacy on the relationship between social support and self-management behaviors among patients with knee osteoarthritis: a cross-sectional study

  Self-management behaviors Self-efficacy
  Model 1 Model 3 Model 2
Variable β SE p β SE p β SE p
Perceived social support 0.90 0.26 < 0.001 0.76 0.25 0.003 1.45 0.72 0.046
Self-efficacy     0.10 0.03 0.001    
Gender 1.20 2.74 0.661 1.07 2.64 0.685 1.31 7.68 0.864
Age − 0.13 0.12 0.285 − 0.08 0.12 0.489 − 0.49 0.34 0.156
 K-L GS -1.74 1.52 0.254 -1.22 1.47 0.408 -5.16 4.25 0.226
BMI − 0.58 0.31 0.063 − 0.37 0.30 0.223 -2.05 0.86 0.019
Disease duration − 0.05 0.22 0.832 − 0.002 0.21 0.990 − 0.43 0.60 0.476
Other diseases 0.28 2.77 0.921 0.39 2.67 0.885 -1.12 7.76 0.885
Educationa          
  Junior or Senior high school 7.89 2.69 0.004 6.31 2.63 0.018 15.93 7.53 0.036
  College and above 13.11 3.72 < 0.001 10.84 3.65 0.004 22.72 10.41 0.031
   R2= 0.28    R2= 0.34    R2= 0.21  
   F = 5.63 < 0.001   F = 6.56 < 0.001   F = 3.93 < 0.001
  Effect SE p 95% CI % b    
Total effect 0.899 0.26 < 0.001 0.390 1.410 100    
Direct effect 0.754 0.25 0.003 0.255 1.254 83.87    
Indirect effect 0.145 0.09   0.002 0.360 16.13    
  1. SE standard error, β Standardized coefficient, K-L GS Kellgren-Lawrence Grading Scale, BMI Body Mass Index, CI confidence interval
  2. a Reference: Elementary school
  3. Percentage of effect/total effect