. Author manuscript; available in PMC: 2018 Oct 12.

Published in final edited form as: J Trauma Stress. 2017 Oct 12;30(5):443–452. doi: 10.1002/jts.22219

Table 2.

Adjusted Risk Ratios (aRR) and 95% Confidence Intervals (CI) Examining the Association Between PTSD and Risk of Functional Limitations, World Trade Center Aging Study, 2002–2015

Variable Name	Category	aRR^a	95% CI
Posttraumatic stress	Remitted vs. None	1.28	[0.77, 2.14]
Posttraumatic stress	Current vs. None	2.02^***	[1.42, 2.87]
Age in years		1.02^*	[1.00, 1.04]
Enrollment year		0.90	[0.48, 1.67]
Forced expiratory volume (1 s)		0.80	[0.61, 1.04]
Education	Some college vs. High school	0.50^**	[0.32, 0.80]
Education	University degree vs. High school	0.58^*	[0.34, 0.97]
Law enforcement		1.04	[0.71, 1.51]
Ergonomic exposures		1.35^*	[1.07, 1.72]
Any post-WTC stressful events		1.18	[0.90, 1.54]
Major depression		0.73	[0.45, 1.19]
Hazardous drinker		1.13	[0.77, 1.64]
Hypertensive		0.80	[0.56, 1.16]
Diabetic		1.51^*	[1.03, 2.21]
Lower respiratory disease		1.31^*	[1.05, 1.68]
Upper respiratory disease		1.24	[0.98, 1.56]
Gastroesophageal reflux disease		1.28^*	[1.03, 1.59]

Note. p values are derived from two-tailed t tests. WTC = World Trade Center.

aRRs compare risk of possible functional limitation.

p < .05.

^**

p < .01.

^***

p < .001.