Table 4.

Correlations between global cognitive performance and TRYCAT metabolites in mood and psychotic disorders.

Test	k	N	r	95% CI	z	p	Q test	Q test (p)	I2
TRP	4	243	0.047	−0.085 to 0.177	0.692	0.489	1.05	0.592	0.00
KYN	7	379	−0.030	−0.132 to 0.074	−0.560	0.575	2.45	0.875	0.00
KA	6	364	−0.127	−0.365 to 0.127	−0.977	0.329	24.63	<0.001	79.70
3-HK	3	129	0.064	−0.141 to 0.263	0.609	0.543	2.42	0.299	17.18
QA	4	205	−0.088	−0.237 to 0.066	−1.118	0.264	3.46	0.315	15.36

K number of studies, N total number of participants, r mean effect size of correlation.