Table 3.

The crude associations for night shifts (n = 20) and swing shifts (n = 16), with day shift as reference (n = 25), for the course of recovery during the first 14 days of a free period for six recovery items

	Sleep quality			Feeling rested			Physical tiredness			Mental tiredness			Energy for family and home			Energy for own activities
exp(β)	95% CI	p	exp(β)	95% CI	p	exp(β)	95% CI	p	exp(β)	95% CI	p	exp(β)	95% CI	p	exp(β)	95% CI	p
Shifts
Day shift	1.00	—		1.00	—		1.00	—		1.00	—		1.00	—		1.00	—
Night shift	1.60	1.27–2.02	< 0.001	2.44	1.73–3.43	< 0.001	1.84	1.39–2.46	< 0.001	1.48	1.09–2.01	0.012	1.78	1.27–2.51	0.001	1.24	0.70–2.20	0.455
Swing shift	1.25	0.94–1.66	0.118	1.09	0.74–1.59	0.673	1.40	1.05–1.86	0.022	0.90	0.63–1.29	0.562	1.04	0.77–1.41	0.801	1.73	0.90–3.34	0.102
Days	0.96	0.93–0.99	0.009	0.97	0.95–0.996	0.023	1.03	0.99–1.07	0.136	0.96	0.93–0.98	<0.001	0.98	0.96–1.01	0.175	0.98	0.95–1.01	0.122
Shifts × days
Day shift × days	1.00	—		1.00	—		1.00	—		1.00	—		1.00	—		1.00	—
Night shift × days	0.99	0.95–1.03	0.491	0.94	0.91– 0.97	<0.001	0.94	0.89–0.99	0.027	0.98	0.95–1.01	0.270	0.97	0.93–1.01	0.098	0.99	0.94–1.04	0.647
Swing shift × days	1.04	0.98–1.09	0.165	0.99	0.95– 1.02	0.467	0.96	0.91–1.02	0.163	0.99	0.96–1.02	0.584	0.99	0.95–1.02	0.419	0.96	0.92–1.01	0.119

CI, confidence interval.