Table 4 Linear regression analysis for predictors affecting the studied parameters

Dependent variable: EF

 • S.F 36 physical functioning

0.063

0.036

0.173

1.729

0.087

 • S.F 36 vitality

0.067

0.040

0.167

1.671

0.098

Dependent variable: LAD

 • MMSE

 − 0.113

0.043

 − 0.239

 − 2.596

0.011*

 • S.F 36 physical functioning

 − 0.011

0.004

 − 0.294

 − 3.105

0.003*

 • S.F 36 role limitation due to physical health

0.007

0.002

0.278

2.930

0.004*

Dependent variable: EHERA Score

 • Special habits

 − 0.301

0.118

 − 0.233

 − 2.553

0.012*

 • Co-morbidities

0.214

0.060

0.331

3.553

0.001*

 • Age

0.008

0.006

0.128

1.363

0.176

Dependent variable: MMSE

 • LAD

 − 0.113

0.043

 − 0.239

 − 2.596

0.011*

 • Age

 − 0.235

0.027

 − 0.315

 − 2.842

0.008*

 • Physical functioning

0.385

0.038

0.421

0.139

0.889

 • Role limitation due to physical health

 − 0.329

0.045

 − 0.369

 − 0.699

0.486

Dependent variable: HADS

 • Physical functioning

 − 0.157

0.852

0.380

 − 2.596

0.001*

 • Vitality

 − 0.085

0.741

0.149

 − 0.842

0.705

 • Social functioning

0.268

0.632

0.369

0.139

0.882

 • Pain

0.456

0.425

 − 2.278

0.699

0.713

 • General health

0.524

0.357

2.499

2.034

0.014*

 • Age

0.412

0.102

2.053

1.985

0.023*