Table 2.

Changes in outcome measures as a function of time and treatment response.

	Main effect of time			Time∗Response interaction			Responders (n = 7)		Non-responders (n = 12)
	F	p	Partial η2	F	P	Partial η2	Baseline	Post-intervention	Baseline	Post-intervention
MADRS	109.398	<0.005	86.6%	66.771	<0.005	79.7%	30.71 ± 4.88	11.71 ± 4.66∗∗	24.58 ± 5.16	22.25 ± 7.23
QIDS	26.997	<0.005	61.4%	14.658	0.001	46.3%	16.71 ± 3.30	5.71 ± 3.63∗∗	11.83 ± 5.02	10.17 ± 3.95
PSQI	14.987	0.001	46.9%	5.917	0.026	25.8%	10.57±4.31	7.29 ± 5.79∗	10.17 ± 3.99	9.42 ± 3.29
QLES-Q	14.864	0.001	46.6%	12.421	0.003	42.2%	35.00 ± 8.85	48.00 ± 8.66∗	39.25 ± 5.39	39.83 ± 6.33
SHAPS	4.404	0.050	20.6%	8.134	0.011	32.4%	4.14 ± 2.85	0.86 ± 1.46∗	4.00 ± 2.86	4.50 ± 3.37
BMRQ total	1.768	0.201	09.4%	1.364	0.259	07.4%	70.29 ± 6.52	74.14 ± 10.15	64.42 ± 11.23	64.67 ± 5.75

Main effect of time (baseline vs. post-intervention) and Time-by-Response interactions are reported, including partial eta-squared (η²) effect sizes. Paired sample t-test: ^∗∗p < 0.005; ^∗p < 0.05. Values are expressed as mean ± standard deviation. MADRS, Montgomery–Asberg Depression Rating Scale; QIDS, Quick Inventory of Depressive Symptomatology; PSQI, Pittsburgh Sleep Quality Index; QLES-Q, Quality of Life Enjoyment and Satisfaction; SHAPS, Snaith-Hamilton Pleasure Scale; BMRQ, Barcelona Music Reward Questionnaire total score.