Table 1. Distribution of gender, fraction of full position, nurses working quick returns, age, number of working nights and number of quick returns among nurses (n = 1990).

	N	Valid percent
Gender
Male	190	9.6%
Female	1792	90.4%
Fraction of full position
50–75%	577	29.0%
76–90%	269	13.5%
>90%	1144	57.5%
Number of nurses working quick returns	1616	81.2%
	Mean (Range)	SD
Age	33.1 (21–63)	8.2
Number of working nights past year	28.7 (0–206)	29.3
Number of quick returns past year	33.2 (0–156)	27.8

N =  Number.

SD =  Standard deviation.