Table 5.

Studies on the interaction between CACNA1C polymorphism, threatening life events, and depression included in the meta-analysis.

Source, year	No. of Subjects	1-Tailed P Value	P Value After Study Exclusion
Lavebratt et al. (26)	2,743	0.77	0.0001
Dedic et al. (25)	4,808	0.001	0.41
Zhao et al. (34)	1,177	0.01	0.01
Total:	8,728
Average sample size:	2909	0.003

P = 0.003 stands for overall effect size which is significant.