Effect of gender on plasma BDNF levels.

<p>BDNF values (pg/ml) are expressed as mean (standard deviation).</p>*<p>p = 0.044.</p

Association between plasma BDNF levels and age or BMI.

<p>Association between plasma BDNF levels and age or BMI.</p

BDNF levels in plasma and CSF samples from controls and MDD subjects.

<p>BDNF values (pg/ml) are expressed as mean (± standard deviation).</p

Cognitive performance measurements.

<p>Values are expressed as mean (standard deviation).</p>*<p>p<0.001.</p

Case demographics.

<p>Values are expressed as mean (± standard deviation).</p><p>BMI  =  Body-mass index;</p><p>MMSE  =  Mini-mental State Exam score;</p>a<p> =  one subject’s years of education was not available.</p