Table 4 Bootstrap analyses of total, direct, indirect effects of the mediation model.

Patient’s disability → caregiver burden

0.371

0.009

0.292-0.450

p < 0.01

Patient’s disability → patient’s PHB to caregiver → caregiver burden

0.049

0.013

0.024–0.076

p < 0.01

Patient’s disability → patient’s PHB to caregiver → caregiver’s affiliate stigma → caregiver burden

0.026

0.007

0.015–0.040

p < 0.01

Patient’s disability → patient’s PHB to caregiver → caregiver’s social support → caregiver burden

0.003

0.006

0.000–0.007

P = 0.06

Patient’s disability → caregiver’s affiliate stigma → caregiver burden

0.036

0.017

0.003–0.068

p < 0.05

Patient’s disability → caregiver’s social support → caregiver burden

0.026

0.012

0.004–0.051

p < 0.05

Patient’s disability → caregiver’s social support → caregiver’s affiliate stigma → caregiver burden

0.029

0.008

0.016–0.046

p < 0.01

Total effect

0.537

0.036

0.469–0.610

p < 0.01