Table 2. Profile of WTCD Cohort and Variables used in Modified New York PTSD Risk Score Prediction Model (N=1681).

Study Variables*	Baseline Assessments	%	95% CI	(n)
Sample Demographics	Age
	18-29	16.9	15.2-18.8	(284)
	30-44	35.5	33.2-37.8	(596)
	45-64	34.9	32.6-37.2	(586)
	65+	12.8	11.3-14.5	(215)
	Female Gender	58.8	56.4-61.1	(988)
	Race
	White	46.5	44.1-48.9	(782)
	Non-white	53.5	51.1-55.9	(899)
	College Graduate	46.1	43.7-48.5	(775)
PCPS from Original NY PTSD Risk Score	Positive Primary Care Screen	22.4	20.4-24.4	(376)
Core Psychosocial Measures from Original NY PTSD Risk Score	PHQ-2 Symptoms
	None	52.9	50.6-55.3	(890)
	One	16.7	15.0-18.6	(281)
	Two	30.3	28.2-32.6	(510)
	Trauma History
	< 2 Event	51.5	49.2-53.9	(866)
	2-3 Events	28.8	26.7-31.0	(484)
	4+ Events	19.7	17.9-21.7	(331)
	Sleeping Problems	31.7	29.5-34.0	(533)
	No Access to Healthcare	10.5	9.1-12.1	(177)
Additional Longitudinal Risk-Factors Measures for Modified NY PTSD Risk Score	Negative Life Events
	None	50.5	48.1-52.8	(848)
	1 Events	27.8	25.7-30.0	(467)
	2+ Events	21.8	19.9-23.8	(366)
	Handedness
	Right	82.3	80.4-84.1	(1384)
	Left	10.9	9.5-12.5	(183)
	Mix	6.8	5.7- 8.1	(114)
	Pain Impairment
	None
	Little/Moderate	32.4	30.2-34.7	(545)
	Extreme
	Self-esteem Low	29.5	27.4-31.7	(496)
Demographics for Modified NY PTSD Risk Score	Latino	21.8	19.9-23.9	(367)
	Foreign Born	31.4	29.2-33.7	(528)
PTSD 12 Months Post Baseline Assessment	PTSD	8.0	6.8-9.4	(134)

^*WTCD = World Trade Center Disaster; PCPS = Primary care PTSD Screener; PHQ-2 = Patient Health Questionnaire-2.