. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Int Forum Allergy Rhinol. 2014 Jul 30;4(9):693–701. doi: 10.1002/alr.21364

Table 4.

Correlation coefficients between postoperative PSQI, RSDI, and SNOT-22 scores.

	RSDI Physical	RSDI Functional	RSDI Emotional	RSDI Total	SNOT-22
Postoperative scores (n=219):	R_s	R_s	R_s	R_s	R_s
PSQI Sleep quality	0.376^**	0.368^**	0.325^**	0.380^**	0.471^**
PSQI Medication	0.218^*	0.153^*	0.127	0.189^*	0.193^*
PSQI Duration	0.287^**	0.282^**	0.283^**	0.294^**	0.420^**
PSQI Sleep disturbance	0.616^**	0.535^**	0.484^**	0.594^**	0.678^**
PSQI Sleep latency	0.316^**	0.311^**	0.288^**	0.335^**	0.427^**
PSQI Daytime dysfunction	0.573^**	0.691^**	0.686^**	0.692^**	0.609^**
PSQI Sleep efficiency	0.283^**	0.298^**	0.268^**	0.286^**	0.374^**
PSQI Total score	0.570^**	0.598^**	0.564^**	0.616^**	0.710^**

indicates significant correlation p<0.050.

^**

indicates significant correlation p<0.001.

Spearman’s correlation coefficients (Rs) for nonparametric distributions were used.