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

Published in final edited form as: Accid Anal Prev. 2013 Apr 5;57:49–54. doi: 10.1016/j.aap.2013.03.028

Table II.

Results of Logistic Regression Analyses of Commercial Air Tour Risk Factor Variables with Fatal Crash as the Outcome Variable, United States 2000–2011.

Risk Factor	Crude			Adjusted^*
Risk Factor	OR^†	95% CI	P-value	AOR	95% CI	P-value
Fire
Relative to no fire	7.3	(2.7–19.9)	<0.001	5.1	(1.5–16.7)	0.008
Instrument meteorological conditions
Relative to visual conditions	12.1	(2.9–50.2)	<0.001	5.4	(1.1–26.4)	0.038
Away from airport location
Relative to on-airport location	11.1	(2.5–48.8)	<0.001	7.2	(1.6–33.2)	0.011

Adjusted model included fire, meteorological conditions, location relative to airport, total pilot flight hours, time of day, aircraft type (helicopter versus airplane), and Code of Federal Regulations part (Part 91 versus Parts 121/135).

^†

Abbreviations: OR=Odds Ratio, AOR=Adjusted Odds Ratio, CI = Confidence interval