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Table 5 Mediation analysis of self-management behaviors and enacted 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
Enacted social support 0.22 0.04 < 0.001 0.21 0.04 < 0.001 0.12 0.12 0.315
Self-efficacy     0.10 0.03 < 0.001    
Gender − 0.66 2.59 0.799 − 0.64 2.48 0.685 − 0.19 7.80 0.981
Age − 0.10 0.12 0.379 − 0.05 0.11 0.489 − 0.47 0.35 0.176
 K-L GS -1.76 1.42 0.218 -1.17 1.37 0.408 -5.80 4.28 0.178
BMI − 0.63 0.29 0.031 − 0.43 0.28 0.223 -1.93 0.87 0.028
Disease duration − 0.20 0.20 0.324 − 0.12 0.19 0.990 − 0.70 0.59 0.239
Other diseases − 0.83 2.58 0.749 − 0.50 2.47 0.885 -3.19 7.77 0.683
Educationa          
  Junior or Senior high school 8.01 2.53 0.002 6.37 2.46 0.011 16.02 7.62 0.037
  College and above 9.37 3.57 0.010 7.25 3.46 0.038 20.67 10.73 0.056
   R2= 0.36    R2= 0.42    R2= 0.20  
   F = 8.16 < 0.001   F = 9.40 < 0.001   F = 3.52 < 0.001
  Effect SE p 95% CI % b    
Total effect 0.217 0.040 < 0.001 0.139 0.296 100    
Direct effect 0.205 0.038 < 0.001 0.130 0.280 94.47    
Indirect effect 0.012 0.013   − 0.013 0.040 5.53    
  1. Abbreviations: 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