. 2026 Apr 25;16:19696. doi: 10.1038/s41598-026-45991-3

Table 4.

Linear-mixed model predicting PHQ-8 score based dietary quality, intervention condition (coded 1 = meal delivery, 0 = nutritional guidance), and the interaction between dietary quality and intervention condition.

Within-person association
Predictors	Estimates	std. Error	95% CI	p	semipartial R²
(Intercept)	17.40	1.22	[14.97, 19.82]	<.001
Condition	−1.80	2.21	[−6.20, 2.59]	.42	.01
Dietary quality	-.87	.17	[−1.22, -.53]	<.001	.17
Dietary quality × condition	.31	.30	[-.29,.91]	.31	.01
Random effects
σ²		8.50
τ_{00 ID}		8.09
ICC		.49
N _ID		31
Observations		92
Marginal R²/conditional R²		.20/.59