Table 3.

Nightly sleep quantity goals met for day and night shift nurses over study.

	Day shift nurses (n = 23)		Night shift nurses (n = 18)		Day shift – night shift between group differences
	n	%	n	%	X2	p-Value	Phi
Met daily sleep goal (7.5 h)
All study days
Yes	35	28.9	39	38.2	2.16	0.141	0.098
No	86	71.1	63	61.8
On-duty day observations
Yes	14	26.9	8	17.8	1.15	0.283	0.109
No	38	73.1	37	82.2
Off-duty day observations
Yes	21	30.4	31	54.4	7.39	0.007⁎	0.242
No	48	69.6	26	45.6
On-duty – off-duty between group differences
X2	0.18		14.27
p-Value	0.673		<0.001⁎
Phi	0.038		0.374

Abbreviations: Percent (%); Chi-square (X²).

^⁎p < 0.05.