Table 3.

Reciprocal Growth Curve Analyses

Change in Depressive Symptoms Predicting Change in Percentage Weight Loss
	Coefficient	SE	t	df	p
β0j (Intercept)	5.86	0.42	14.06	556	<.001
β1j (Depressive Symptoms)	0.07	0.03	2.05	1148	.041
β2j (Time)	0.22	0.06	3.49	556	<.001
β3j (Time2)	−0.04	0.01	-3.76	556	<.001
Paina Included as Covariate
β1j (Depressive Symptoms)	0.02	0.04	0.42	665	0.673
Eating HRQOLa Included as Covariate
β1j (Depressive Symptoms)	−0.02	0.04	−0.38	690	0.707
Change in Percentage Weight Loss Predicting Change in Depressive Symptoms
	Coefficient	SE	t	df	p
β0j (Intercept)	6.95	0.26	26.43	556	<.001
β1j (Percentage Weight Loss)	0.06	0.02	2.44	556	.015
β2j (Time)	−0.09	0.03	−3.15	556	.002
Paina Included as Covariate
β1j (Percentage Weight Loss)	0.03	0.03	0.97	322	.334
Eating HRQOLa Included as Covariate
β1j (Percentage Weight Loss)	−0.02	0.03	−0.67	337	.506

Note. Time was modeled in months since the 6-month assessment (intercept time-point). Each patient’s unique dates of assessment were calculated to account for any variability in follow-up assessment timing.

Abbreviations. SE=standard error. t=t-statistic. df=degrees of freedom. p=p-value. HRQOL=health-related quality of life.

^aMeasured at the 6-month assessment.