Table 2.

Weighted Prevalence of PTSD Trajectory Groups and Status by Military Service in Theater Full Cases and Full Plus Subthreshold

	Yes		No
PTSD status and trajectory	%	95% CI	%	95% CI	p
Full
Unadjusted					<.001
No PTSD	79.33	[75.69, 82.54]	90.47	[88.92, 91.83]
Early recovery	7.18	[5.15, 9.93]	2.83	[2.15, 3.71]
Late recovery	3.74	[2.79, 5.00]	1.88	[1.39, 2.55]
Late onset	5.83	[4.46, 7.57]	3.71	[2.83, 4.85]
Chronic	3.93	[2.50, 6.12]	1.10	[0.67, 1.81]
Adjusted for military service and demographics					<.001
No PTSD	78.36	[74.88, 81.47]	91.22	[89.75, 92.49]
Early recovery	6.98	[5.09, 9.50]	2.73	[2.07, 3.59]
Late recovery	4.13	[3.05, 5.57]	1.74	[1.26, 2.41]
Late onset	6.40	[4.78, 8.53]	3.21	[2.47, 4.17]
Chronic	4.13	[2.65, 6.37]	1.10	[0.64, 1.88]
Adjusted for military service, demographics, and psychiatric disorders					<.001
No PTSD	79.05	[75.62, 82.11]	90.85	[89.33, 92.18]
Early recovered	6.56	[4.82, 8.87]	2.85	[2.17, 3.74]
Late recovery	3.89	[2.87, 5.26]	1.85	[1.33, 2.56]
Late onset	6.55	[4.87, 8.76]	3.29	[2.52, 4.28]
Chronic	3.95	[2.47, 6.27]	1.16	[0.69, 1.96]
Full plus subthreshold
Unadjusted					<.001
No PTSD	62.58	[57.96, 66.99]	80.83	[78.84, 82.68]
Early recovery	17.15	[13.95, 20.90]	8.33	[7.14, 9.70]
Late recovery	7.00	[5.38, 9.08]	3.58	[2.82, 4.53]
Late onset	5.69	[4.28, 7.54]	3.97	[3.07, 5.12]
Chronic	7.57	[5.69, 10.00]	3.28	[2.52, 4.27]
Adjusted for military service and demographics					<.001
No PTSD	62.17	[58.24, 65.94]	81.65	[79.61, 83.52]
Early recovery	16.78	[14.00, 19.99]	8.30	[7.08, 9.72]
Late recovery	7.42	[5.76, 9.51]	3.31	[2.58, 4.22]
Late onset	5.75	[4.30, 7.64]	3.51	[2.69, 4.56]
Chronic	7.88	[5.88, 10.48]	3.23	[2.42, 4.30]
Adjusted for military service, demographics, and psychiatric disorders					<.001
No PTSD	62.89	[59.00, 66.62]	81.08	[79.00, 83.00]
Early recovery	16.19	[13.54, 19.23]	8.58	[7.32, 10.05]
Late recovery	7.35	[5.67, 9.47]	3.43	[2.67, 4.40]
Late onset	5.94	[4.44, 7.91]	3.57	[2.73, 4.67]
Chronic	7.64	[5.61, 10.33]	3.33	[2.51, 4.40]

Note. All estimates were adjusted for nonresponse and to the 2010 Vietnam-era population. Subthreshold cases met Criterion C or D according to the Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 1994), but not both in the last 12 months.

Pearson χ² statistic corrected for weighting design and converted to an F statistic.