Korean Journal of Family Practice

Table. 6.

Factors affecting the odds ratio of sleep disturbance in delivery workers

Variable	Category	Door to door deliveriers						Food deliveriers
		Crude OR			Adjusted OR^a			Crude OR			Adjusted OR^a
		OR	95% CI	P-value	OR	95% CI	P-value	OR	95% CI	P-value	OR	95% CI	P-value
Psychosocial working conditions (reference: unexposed)	Working fast	3.86	3.77–3.96	<0.001	5.64	5.48–5.82	<0.001	0.95	0.92–0.98	0.001	0.35	0.34–0.37	<0.001
	Strict deadlines	1.69	1.66–1.73	<0.001	2.02	1.96–2.07	<0.001	4.19	4.06–4.33	<0.001	2.50	2.40–2.60	<0.001
	Support from colleagues	1.48	1.45–1.52	<0.001	1.74	1.69–1.78	<0.001	0.86	0.83–0.89	<0.001	1.24	1.18–1.29	<0.001
	Support from managers	1.30	1.27–1.33	<0.001	1.37	1.33–1.41	<0.001	3.11	3.00–3.22	<0.001	3.88	3.69–4.08	<0.001
	Job stress	5.98	5.84–6.13	<0.001	7.26	7.06–7.47	<0.001	3.06	2.96–3.16	<0.001	4.28	4.08–4.49	<0.001
	Hiding emotions	4.85	4.73–4.97	<0.001	6.29	6.11–6.47	<0.001	1.58	1.53–1.63	<0.001	0.95	0.91–0.99	0.022
Working time quality (reference: no)	Long working hours	3.58	3.50–3.67	<0.001	0.15	0.14–0.16	<0.001	1.72	1.67–1.78	<0.001	0.64	0.61–0.67	<0.001
	Lack of rest time	2.37	2.31–2.43	<0.001	2.22	2.15–2.28	<0.001	3.49	3.34–3.65	<0.001	6.96	6.50–7.46	<0.001
	Night work	0.93	0.90–0.96	<0.001	0.97	0.93–1.01	0.091	0.47	0.45–0.48	<0.001	3.27	3.11–3.45	<0.001
	Evening work	3.06	2.98–3.14	<0.001	0.31	0.30–0.32	<0.001	2.07	1.98–2.15	<0.001	0.51	0.48–0.54	<0.001
	Sunday work	0.37	0.36–0.38	<0.001	2.92	2.80–3.04	<0.001	0.29	0.28–0.30	<0.001	2.38	2.28–2.48	<0.001
	Saturday work	1.67	1.62–1.72	<0.001	0.47	0.45–0.48	<0.001	1.72	1.59–1.86	<0.001	0.46	0.41–0.51	<0.001

OR, odds ratio; CI, confidence interval.

^aSex, age, employment, working duration, income adjusted.

Analyzed by multiple logistic regression analysis after adjusting variables.

P-value is obtained by multiple logistic regression analysis.