Table 2.

Changes in Five Self-Report Outcome Measures During a Randomized Trial of PT (T) Versus ERC (C)

Variable	Baseline mean	PT change	ERC change	p Value
Perceived Stress Scale	19.3 ± 7.2 (T); 19.1 ± 8.2 (C)	−8.3 ± 7.54	−2.5 ± 6.2	.01
Center for Epidemiological  Studies–Depression	19.7 ± 6.4 (T); 20.0 ± 10.6 (C)	−7.9 ± 8.25	−1.9 ± 9.5	.045
Pittsburgh Sleep Quality Index	9.0 ± 3.2 (T); 9.3 ± 4.2 (C)	−3.1 ± 3.88	−1.4 ± 3.2	.16
Quality of Life–AD	33.4 ± 5.3 (T); 32.7 ± 8.1 (C)	5.2 ± 4.66	3.4 ± 7.3	.39
Penn State Worry Questionnaire	48.9 ± 18.4 (T); 45.9 ± 23.1 (C)	−18.0 ± 18.02	−9.9 ± 17.3	.17

Note: AD = Alzheimer's disease; ERC = enhanced respite control; PT = polarity therapy.