Distribution and Risk Factors of Water-Related Accidents for General Aviation Aircraft

Table 2

Multivariable logistic regression of risk factors for a fatal flight.

				95% confidence intervals
	Comparison	value	Odds ratio	Lower	Upper
Rated power (hp)	0-99
	100-199	0.017^a	5.709	1.374	23.716
	200-299	0.006^a	5.573	1.645	18.883
	300-499	0.002^a	8.537	2.264	32.194
	500+	0.004^a	7.595	1.943	29.683
Conditions at accident site	Visual conditions
	Instrument conditions	0.003^a	25.585	3.047	214.822
Condition of light	Day
	Night/dark/dusk/dawn	0.002^a	3.717	1.645	8.400
Broad phase of flight	Takeoff
	Maneuvering	0.145	2.128	0.771	5.87
	Landing	0.447	0.689	0.264	1.798
	Cruise	0.001^a	7.899	2.417	25.815
	Approach	0.910	1.088	0.254	4.658
	Other	0.940	1.047	0.322	3.402

^aStatistically significant factors .