Table 1. Demographic and clinical characteristics of the MARS patient sample.

Characteristic	MARS Patients (n = 51)
Gender, percent female	26 (51%)
Age, mean ± SD	49.0±14.7 y
Diagnoses, number (percent)
Major depressive disorder— single episode	13 (25%)
Major depressive disorder—recurrent	32 (63%)
Bipolar depression	6 (12%)
Duration of current episode, MD (IQR)	19 (8; 52) wk; range: 2–450 wk
Number of previous episodes, MD (IQR)	1 (0; 3) episodes; range: 0–20
HDRS at admission, mean ± SD	23.8±5.6

Because of a non-normal distribution of duration of the current episode and number of previous episodes, the median, the interquartile range, and the total range are reported for these two variables.

IQR, interquartile range (25% and 75% percentiles); MD, median.