Table 4. Correlations between serum IGF-2 levels and psychopathology and cognitive function in patients.

	IGF-2 levels
	Pearson's correlation		Partial correlation analysis
Psychopathology	r	p	r	p
PANSS total scores	0.019	0.919	0.141	0.683
PANSS positive subscores	0.042	0.820	0.045	0.823
PANSS negative subscores	-0.452	0.009	-0.408	0.035
PANSS general subscores	0.220	0.225	0.387	0.046
Cognitive function
processing speed	0.158	0.389	0.059	0.768
working memory	0.546	0.001	0.515	0.006
visual memory	-0.198	0.277	0.049	0.810
verbal learning	-0.002	0.990	-0.153	0.447
attention	0.405	0.021	0.352	0.071
executive function	0.606	<0.001	0.543	0.003