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Table 4 Mediation analysis for the association between depression and life satisfaction, mediated by nutrition

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

  Model 1 Model 2 Model 2
β BCa
95% CI
β BCa
95% CI
β BCa
95% CI
Total effect, (c) −0.99 −1.13, − 0.85 −1.02 − 1.16, − 0.88 −0.94 −1.08, − 0.81
Direct effect, (c’) −0.89 −1.02, − 0.75 −0.92 −1.05, − 0.78 −0.87 −1.01, − 0.74
Indirect effect, (a X b) − 0.10 −0.17, − 0.05 −0.10 − 0.17, − 0.05 −0.07 − 0.14, − 0.03
aRatio of indirect to total effect mediated (a X b/c) 0.11 0.05, 0.18 0.10 0.05, 0.17 0.07 0.03, 0.14
aRatio of indirect to direct effect (a X b/c’) 0.12 0.06, 0.21 0.12 0.06, 0.21 0.08 0.03, 0.16
  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 being 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