Table 1.

Disturbance environmental factors before and after intervention.

Pre-implementation	Morning (n=414)	Noon (n=341)	Night (n=235)
No lights on	45%	33%	41%
Bright lights on	29%	41%	21%
Television picture on	57%	67%	46%
Television sound on	16%	26%	33%
Door open	98%	96%	94%
Door curtain open	44%	48%	57%
Window shade open	68%	70%	78%
Post-implementation	Morning (n=257)	Noon (n=308)	Night (n=254)
No lights on	39%	33%	50%*
Bright lights on	35%	40%	17%
Television picture on	54%	54%**	46%
Television sound on	42%**	44%**	32%
Door open	98%	99%*	91%
Door curtain open	46%	58%*	42%**
Window shade open	72%	78%*	62%**

^*p<0.05 for difference in pre vs. post-intervention at the same time-point

^**p<0.005 for difference in pre vs. post-intervention at the same time-point