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Table 3 Results of sequential mediation model showing total, direct, and indirect effects on quality of life (depression)

From: Quality of life and care burden among family caregivers of people with severe mental illness: mediating effects of self-esteem and psychological distress

Variable

Effect

Standard error

t

p-value

Physical health

 Total effect of care burden

-0.062

0.006

-10.92

< 0.001

 Direct effect of care burden

-0.008

0.006

-1.39

0.166

 Indirect effect of care burden

Effect

Bootstrapping SE

Bootstrapping LLCI

Bootstrapping ULCI

 Total indirect effect of care burden

-0.054

0.005

-0.064

-0.045

 Indirect effect via self esteem

-0.014

0.003

-0.020

-0.008

 Indirect effect via depression

-0.030

0.004

-0.039

-0.022

 Indirect effect via self-esteem and depression

-0.011

0.002

-0.015

-0.007

Psychological health

 Total effect of care burden

-0.075

0.006

-12.86

< 0.001

 Direct effect of care burden

-0.018

0.006

-3.16

0.002

 Indirect effect of care burden

Effect

Bootstrapping SE

Bootstrapping LLCI

Bootstrapping ULCI

 Total indirect effect of care burden

-0.057

0.005

-0.067

-0.047

 Indirect effect via self esteem

-0.020

0.003

-0.027

-0.013

 Indirect effect via depression

-0.028

0.004

-0.036

-0.020

 Indirect effect via self-esteem and depression

-0.010

0.002

-0.014

-0.006

Social relationships

 Total effect of care burden

-0.058

0.005

-10.63

< 0.001

 Direct effect of care burden

-0.022

0.006

-3.59

< 0.001

 Indirect effect of care burden

Effect

Bootstrapping SE

Bootstrapping LLCI

Bootstrapping ULCI

 Total indirect effect of care burden

-0.036

0.005

-0.046

-0.027

 Indirect effect via self esteem

-0.017

0.004

-0.025

-0.010

 Indirect effect via depression

-0.014

0.003

-0.021

-0.008

 Indirect effect via self-esteem and depression

-0.005

0.001

-0.008

-0.003

Environment

 Total effect of care burden

-0.057

0.006

-10.41

< 0.001

 Direct effect of care burden

-0.030

0.007

-4.58

< 0.001

 Indirect effect of care burden

Effect

Bootstrapping SE

Bootstrapping LLCI

Bootstrapping ULCI

 Total indirect effect of care burden

-0.027

0.005

-0.036

-0.019

 Indirect effect via self esteem

-0.012

0.003

-0.019

-0.006

 Indirect effect via depression

-0.011

0.003

-0.018

-0.005

 Indirect effect via self-esteem and depression

-0.004

0.001

-0.007

-0.002

  1. Abbreviations: SE = standard error; LLCI = lower limit of confidence interval; ULCI: upper limit of confidence interval