Table 1.

Demographic and tissue status characteristics of postmortem brain tissue donors

	Group; no. of tissue sample donors*
Characteristic	Control (n = 36)	Depressed (n = 45)
Age, mean ± SD, yr	42.1 ± 14.3	43.3 ± 13.6
Sex, F:M	9:27	15:30
pH, mean ± SD	6.6 ± 0.3	6.6 ± 0.2
PMI, mean ± SD, h	29.9 ± 13.6	33.95 ± 17.5
Race
White	20	26
Black	12	13
Other	4	6
Cause of death
Natural	25	7
Accident	3	10
Homicide	8	3
Suicide	0	25
Cardiovascular event	24	7
Accidental overdose	0	15
Smoker†	14	11
Ethanol at death‡	0	13

F = female; M = male; PMI = postmortem interval; SD = standard deviation.

^*Unless indicated otherwise.

^†Data on smoking status missing for 16 depressed individuals.

^‡Data on ethanol status missing for 11 depressed individuals.