Brain-derived neurotrophic factor, sex hormones and cognitive decline in male patients with schizophrenia receiving continuous antipsychotic therapy

Table 4 Correlations between brain-derived neurotrophic factor levels and cognitive function in all subjects¹

	BDNF
	r	P value2	P value3	P value4
DCT	-0.376	< 0.001	0.0019	NS
Category fluency	0.539	< 0.001	0.022	NS
SS	0.307	< 0.001	0.398	NS
TMT-A	-0.516	< 0.001	0.010	NS
Block design	0.557	< 0.001	0.015	NS
PASAT correct	0.442	< 0.001	0.404	NS
PASAT try	0.405	< 0.001	0.201	NS

¹Pearson product moment.

²Before adjusting for confounding factors.

³After adjusting for confounding factors (body mass index).

⁴Bonferroni correction was applied (a new = 0.05/7 = 0.007).

NS: Not significant; DCT: Digit Cancellation Test; SS: Spatial Span Test; PASAT: Paced Auditory Serial Addition Test; TMT-A: Trail Making Task.