. Author manuscript; available in PMC: 2020 Jan 1.

Published in final edited form as: Stat Sin. 2019;29(4):1633–1655. doi: 10.5705/ss.202018.0076

Table 5:

Summary statistics for the covariates in the STAR*D study: for continuous variables, we report means and standard deviations; for dichotomous variables, we report proportions and standard deviations.

	Chronic		Gender		Age		GMC
	Stage 1	Stage 2	Stage 1	Stage 2	Stage 1	Stage 2	Stage 1
Switch	0.29 (0.03)	0.29 (0.03)	0.51 (0.04)	0.46 (0.04)	43.99 (0.88)	45.78 (0.84)	0.59 (0.04)
Augmentation	0.26 (0.04)	0.26 (0.04)	0.49 (0.05)	0.57 (0.05)	44.76 (1.05)	41.65 (1.11)	0.56 (0.05)
	GMC	Anxiety		Week		QIDS-SR(16)
	Stage 2	Stage 1	Stage 2	Stage 1	Stage 2	Stage 1	Stage 2
Switch	0.62 (0.03)	0.76 (0.03)	0.74 (0.03)	9.21 (0.30)	7.48 (0.34)	14.96 (0.29)	14.54 (0.31)
Augmentation	0.51 (0.05)	0.70 (0.04)	0.73 (0.04)	9.64 (0.40)	9.35 (0.46)	13.45 (0.37)	12.77 (0.37)