. Author manuscript; available in PMC: 2014 Apr 1.

Published in final edited form as: Suicide Life Threat Behav. 2012 Dec 28;43(2):139–149. doi: 10.1111/sltb.12003

Table 2.

Descriptive statistics and the proportion of the sample over the clinical cutoff for individuals reporting nightmares^*

Measure	N	Mean	SD	Clinical cutoff	% over clinical cutoff
Insomnia Symptoms	310	9.45	4.64	15	12.6%
Insomnia Symptom Duration^a	302	7.12	24.80	N/A	N/A
Nightmares	312	8.85	5.60	11	32.05%
Nightmare Duration^b	288	73.93	79.52	N/A	N/A
Depressive Symptoms	302	17.99	10.10	16	55.6%
PTSD Symptoms	306	37.16	12.23	50	18.6%
Anxiety Symptoms	306	38.94	8.75	50	12.8%
Suicide risk	307	5.14	3.01	7	22.2%

Number of months. Excludes individuals reporting no insomnia symptoms.

Number of months. Excludes individuals reporting no nightmares.

Statistics are before items involving sleep were removed from the measures of depressive symptoms, PTSD symptoms, and anxiety symptoms.