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Table 3 Mediation analysis for the association between nutrition and life satisfaction, mediated by depression

From: Life satisfaction among elderly patients in Nepal: associations with nutritional and mental well-being

  Model 1 Model 2 Model 3
β BCa 95% CI β BCa
95% CI
β BCa
95% CI
Total effect, (c) 0.92 0.67, 1.16 0.94 0.69, 1.18 0.78 0.52, 1.03
Direct effect, (c’) 0.53 0.33, 0.74 0.56 0.36, 0.76 0.48 0.27, 0.69
Indirect effect, (a X b) 0.39 0.23, 0.57 0.37 0.21, 0.56 0.30 0.13, 0.49
aRatio of indirect to total effect mediated, (a X b/c) 0.42 0.27, 0.60 0.40 0.25, 0.57 0.38 0.19, 0.60
aRatio of indirect to direct effect, (a X b/c’) 0.72 0.37, 1.51 0.67 0.33, 1.33 0.62 0.24, 1.49
  1. Model 1: unadjusted mediational model; Model 2: adjusted for age, and sex; Model 3: adjusted for age, sex, ethnicity, marital status, smoking, alcohol use, educational status, perception of ignored/hated, perceived health status compared to peers
  2. Number of bootstrap samples for bias-corrected bootstrap confidence intervals: 5000
  3. β: Unstandardized coefficient; BCa: Bias-corrected and accelerated
  4. aValues are ratios of regression coefficients