. 2013 Aug 12;31(26):3233–3241. doi: 10.1200/JCO.2012.43.7707

Table 3.

Means, ORs, and SEs for PSQI and Actigraphy Data

Outcome	YOCAS Group								Control Group										YOCAS-Control
	No.	Preintervention		Postintervention		Within-Group Difference		P	No.	Preintervention		Postintervention		Within-Group Difference		P	Baseline Reference		Between-Group Difference		P^‡
	No.	Mean	SE	Mean	SE	Mean	SE	P	No.	Mean	SE	Mean	SE	Mean	SE	P	Minutes	%	Mean^* or OR^†	SE	P^‡
PSQI
Global sleep quality	168	9.20	0.25	7.23	0.26	−1.96	0.25	< .001	153	8.96	0.28	7.89	0.26	−1.07	0.23	.005			−0.79^*	0.30	.009
Sleep latency	168	1.48	0.08	1.14	0.08	−0.34	0.08	.004	158	1.47	0.09	1.26	0.09	−0.21	0.08	.089			0.84^†	0.18	.416
Sleep duration	168	1.05	0.06	0.86	0.06	−0.19	0.05	.020	158	1.01	0.06	0.89	0.06	−0.12	0.06	.182			0.93^†	0.21	.737
Sleep efficiency	168	1.13	0.08	0.76	0.07	−0.36	0.07	.001	158	1.10	0.09	0.85	0.08	−0.25	0.08	.035			0.82^†	0.18	.363
Sleep disturbance	168	1.66	0.05	1.51	0.05	−0.14	0.04	.031	157	1.75	0.05	1.59	0.05	−0.17	0.05	.012			0.84^†	0.21	.484
Daytime dysfunction	168	1.30	0.05	0.93	0.05	−0.38	0.05	< .001	160	1.18	0.05	1.13	0.05	−0.06	0.05	.460			0.38^†	0.09	< .001
Sleep medication use	168	1.01	0.10	0.80	0.10	−0.21	0.09	.137	160	0.81	0.10	0.84	0.10	0.04	0.07	.788			0.56^†	0.16	.046
Subjective sleep quality	168	1.57	0.05	1.22	0.05	−0.35	0.06	< .001	157	1.62	0.05	1.37	0.05	−0.26	0.06	.001			0.63^†	0.15	.047
Actigraphy
Sleep onset latency	157	30.49	2.72	28.56	2.18	−1.94	2.17	.579	147	34.5	2.94	31.59	3.12	−2.90	2.64	.499			−7.05^*	2.98	.813
Wake after sleep onset^§	157	63.05	2.02	61.17	1.75	−1.88	1.46	.482	147	66.16	2.17	66.45	2.42	0.29	1.43	.929	66		−3.33^*	2.10	.078
																	80		−7.39^*	1.28	< .001
																	100		−13.18^*	1.52	< .001
																	150		−27.68^*	3.01	< .001
																	200		−42.17^*	4.72	< .001
Overall																					< .001
Sleep efficiency^§	157	76.65	0.86	77.01	0.66	0.36	0.74	.736	147	76.00	0.71	76.26	0.74	0.26	0.61	.804		20	14.80^*	2.99	.002
																		40	9.69^*	1.97	.002
																		60	4.57^*	1.05	.004
																		75	0.74^*	1.68	.354
Overall																					.008

NOTE. Mean differences are reported at different baseline values when a significant arm-baseline interaction is present (ie, actigraphy end points). Pittsburgh Sleep Quality Index (PSQI) values represent actual scores on the measure, and actigraphy data are presented in minutes for sleep onset latency and wake after sleep onset, and as a percent for sleep efficiency. Within-group differences are expressed as mean difference for PSQI and actigraphy data. Between-group differences are expressed as mean differences for the global sleep quality PSQI score and actigraphy and as odds ratios (ORs) for the PSQI subscales with controls as the reference.

Abbreviation: YOCAS, Yoga for Cancer Survivors.

Mean values were obtained from analysis of covariance models.

^†

ORs were obtained from ordinal logistic regression models.

^‡

Indicates a simultaneous test of the arm main effect and the arm-baseline interaction (ie, overall test of arm).

^§

Indicates a significant arm-baseline interaction.