Factors Affecting Car Sickness of Passengers Traveled by Vehicles in North Shewa Zone, Oromia, Ethiopia

Table 4

Logistic regression predicting car sickness of passengers.

Covariates/Variables	Categories	β	Sig.	AOR	95% CI for AOR
					Lower	Upper
Age	Year	−.0028	0.042	0.972	0.947	0.999
Sex	Male	−1.029	0.001	0.357	0.190	0.673
	Female	0^a	.	1	.	.
Reasons	Overcrowding of roads	−0.747	0.138	0.474	0.176	1.271
	Worrying about journeys	−0.624	0.257	0.536	0.182	1.577
	Poor ventilation of vehicles	−0.176	0.746	0.838	0.289	2.435
	Normal circumstances	0^a	.	1	.	.
Stomach status of individuals	Full	−0.627	0.092	0.534	0.257	1.109
	Empty	0^a	.	1	.	.
Occasionally travels	Yes	0.064	0.826	1.066	0.605	1.879
	No	0^a	.	1	.	.
Personal behaviors of drivers	Aggressiveness	1.699	0.000	5.467	2.456	12.172
	Friendliness	0^a	.	1	.	.
Type of meals	Heavy meals	1.422	0.002	4.147	1.659	10.366
	Light meals	0^a	.	1	.	.
Sleeping status before journey	Deprived	2.145	0.000	8.540	2.575	28.328
	Sufficient	0^a	.	1	.	.
Substance use	Yes	1.123	0.090	3.073	0.838	11.267
	No	0^a	.	1	.	.
Nature of roads	Curved roads	−0.347	0.264	0.707	0.384	1.300
	Straight roads	0^a	.	1	.	.
Nature of journeys	Overcrowded	2.254	0.000^∗	9.521	5.194	17.455
	Freely	0a	.	1	.	.
Sitting at the back seat of vehicles	Yes	−0.163	0.715	0.850	0.354	2.039
	No	0^a	.	1	.	.
Listening high volume of music	Yes	−.069	0.911	.934	0.279	3.128
	No	0^a	.	1	.	.
Lack of focused at horizon	Yes	0.578	0.065	1.783	0.964	3.298
	No	0^a	.	1	.	.
Speed of the vehicles	Yes	−0.316	0.327	0.729	0.388	1.371
	No	0^a	.	1	.	.
Braking effects of vehicles	Yes	0.148	0.652	1.159	0.609	2.206
	No	0 ^a	.	1	.	.

(LRT = 160.205, -value < 0.001), (HLT = 14.074, -value = 0.08), significant at .