Table 2.

Comparison of key variables by shift length (N = 100).

	t	df	Sig. (2-tailed)	Mean difference	Std. error difference	95% confidence interval of the difference
						Lower	Upper
Satisfaction with the current shift	3.273	98	0.001	0.752	0.230	0.296	1.209
Fatigue level	3.821	98	0.000	0.873	0.228	0.419	1.326
QOL	4.201	98	0.000	0.625	0.149	0.330	0.921
ITL	0.171	98	0.864	0.024	0.143	−0.259	0.307

Abbreviations: ITL = intention to leave and QOL = quality of life.