Table 5 Presenting results from the regression analysis of association between HRQoL parameters and the potentially buffering factors (social support and self-efficacy) in siblings

HRQoL dimensions

Physical function

0.096

0.444

− 0.017

− 0.164

0.181

0.028

Role physical

− 0.017

0.892

− 0.026

− 0.106

0.389

0.012

Bodily pain

0.148

0.243

− 0.005

0.152

0.219

0.024

General health

0.368*

0.003

0.104

0.369*

0.003

0.131

Vitality

0.472*

 < 0.001

0.183

0.281

0.025

0.075

Social functioning

0.331

0.007

0.082

0.224

0.067

0.050

Role emotional

0.424*

 < 0.001

0.157

0.079

0.519

0.007

Mental health

0.421*

0.001

0.145

0.340*

0.005

0.113

Mental health parameters

Depression

− 0.464*

 < 0.001

0.205

− 0.277

0.023

0.107

Anxiety

− 0.125

0.341

0.001

− 0.135

0.291

0.044

Stress

− 0.265

0.039

0.051

− 0.208

0.097

0.068