AGE	SEX	EDU	SR-IR	SR-DR
AGE	1	0.039	−0.552	−0.315	−0.279
SEX	0.039	1	0.068	−0.143	−0.13
EDU	−0.552	0.068	1	0.578	0.489
SR-IR	−0.315	−0.143	0.578	1	0.896
SR-DR	−0.279	−0.13	0.489	0.896	1

Hueng, T. T., Lee, I. H., Guog, Y. J., Chen, K. C., Chen, S. S., Chuang, S. P., ... & Yang, Y. K. (2011). Is a patient-administered depression rating scale valid for detecting cognitive deficits in patients with major depressive disorder? Psychiatry and Clinical Neurosciences, 65(1), 70–76. doi:10.1111/j.1440-1819.2010.02166.x

N = 40

Sex coding: male > female

Education coding: higher is better