Table 4.

Individual Variable Contributions in Predicting Sleep Maintenance

	B	OR	95% CI	p	% Cases Classified
PTSD Symptom Severity
Baserate					54.7%
Step 1					61.9%
Age	0.02	1.02	1.01 – 1.03	<.01
Sex	−0.12	0.88	0.63 – 1.24	ns
MDE	1.07	2.90	2.07 – 4.07	<.01
Drug dependence	−0.07	0.94	0.18 – 5.00	ns
Age at trauma	−0.01	1.00	0.99 – 1.01	ns
Step 2					65.0%
PTSD Symptom Severity	0.11	1.12	1.06 – 1.17	<.01
Hyperarousal
Baserate					54.7%
Step 1					61.9%
Age	0.02	1.02	1.01 – 1.03	<.01
Sex	−0.12	0.88	0.63 – 1.24	ns
MDE	1.07	2.90	2.07 – 4.07	<.01
Drug dependence	−0.07	0.94	0.18 – 5.00	ns
Age at trauma	−0.01	1.00	0.99 – 1.01	ns
Step 2					63.2%
Reexperiencing	0.21	1.23	1.05 – 1.44	<.05
Avoidance	0.08	1.09	0.99 – 1.20	ns
Step 3					65.1%
Hyperarousal	0.17	1.19	1.03 – 1.38	<.05
Reexperiencing
Baserate					54.7%
Step 1					61.9%
Age	0.02	1.02	1.01 – 1.03	<.01
Sex	−0.12	0.88	0.63 – 1.24	ns
MDE	1.07	2.90	2.07 – 4.07	<.01
Drug dependence	−0.07	0.94	0.18 – 5.00	ns
Age at trauma	−0.01	1.00	0.99 – 1.01	ns
Step 2					63.3%
Avoidance	0.08	1.08	0.99 – 1.19	ns
Hyperarousal	0.21	1.23	1.06 – 1.42	<.01
Step 3					65.1%
Reexperiencing	0.17	1.18	1.00 – 1.39	<.05
Avoidance
Baserate					54.7%
Step 1					61.9%
Age	0.02	1.02	1.01 – 1.03	<.01
Sex	−0.12	0.88	0.63 – 1.24	ns
MDE	1.07	2.90	2.07 – 4.07	<.01
Drug dependence	−0.07	0.94	0.18 – 5.00	ns
Age at trauma	−0.01	1.00	0.99 – 1.01	ns
Step 2					65.1%
Reexperiencing	0.19	1.21	1.04 – 1.41	<.05
Hyperarousal	0.20	1.22	1.06 – 1.40	<.01
Step 3					65.1%
Avoidance	0.05	1.05	0.95 – 1.16	ns

Note: MDE = major depressive episode; B = Standardized B; 95 % CI= 95% Confidence Interval; OR = odds ratio.