Level of vitamin D

Duration of PD

Age in years

Hx of head injury

Hx of alcohol intake

Cigarette smoking

Pesticide contact Hx

Family history

BMI

Level of vitamin D

Pearson Correlation

1

−0.649**

−0.656**

0.153*

−0.059

−0.037

−0.042

0.013

0.036

Sig. (2-tailed)

0.000

0.000

0.017

0.358

0.566

0.512

0.840

0.572

Duration of Parkinson’s disease

Pearson Correlation

−0.649**

1

0.814**

−0.129*

0.021

−0.077

0.130*

−0.014

0.013

Sig. (2-tailed)

0.000

0.000

0.045

0.742

0.232

0.043

0.832

0.840

Age in years

Pearson Correlation

−0.656**

0.814**

1

−0.065

−0.030

−0.198**

0.019

−0.098

0.004

Sig. (2-tailed)

0.000

0.000

0.314

0.646

0.002

0.771

0.128

0.953

History of head injury

Pearson Correlation

0.153*

−0.129*

−0.065

1

−0.064

−0.164*

−0.055

−0.180**

0.002

Sig. (2-tailed)

0.017

0.045

0.314

0.318

0.011

0.389

0.005

0.975

History of alcohol intake

Pearson Correlation

−0.059

0.021

−0.030

−0.064

1

0.001

0.065

0.882**

0.030

Sig. (2-tailed)

0.358

0.742

0.646

0.318

0.990

0.314

0.000

0.641

Cigarette smoking

Pearson Correlation

−0.037

−0.077

−0.198**

−0.164*

0.001

1

−0.114

0.044

0.006

Sig. (2-tailed)

0.566

0.232

0.002

0.011

0.990

0.077

0.493

0.925

Pesticide contact hx

Pearson Correlation

−0.042

0.130*

0.019

−0.055

0.065

−0.114

1

0.074

0.001

Sig. (2-tailed)

0.512

0.043

0.771

0.389

0.314

0.077

0.253

0.982

Family history

Pearson Correlation

0.013

−0.014

−0.098

−0.180**

0.882**

0.044

0.074

1

0.078

Sig. (2-tailed)

0.840

0.832

0.128

0.005

0.000

0.493

0.253

0.225

Body Mass Index

Pearson Correlation

0.036

0.013

0.004

0.002

0.030

0.006

0.001

0.078

1

Sig. (2-tailed)

0.572

0.840

0.953

0.975

0.641

0.925

0.982

0.225

N

243

243

243

243

243

243

243

243

243