Table 3.

Age, gender, and provider as predictors of the intercept, slope, and quadratic components for depression symptoms.

PHQ-9a	Estimate	SE	t	95% CI	P value
Intercept	6.51	.87	7.48	4.80 to 8.22	<.001
Slope	–.58	.02	–20.53	–.63 to –.52	<.001
Quadratic	.04	.004	10.72	.03 to .05	<.001
Age	–.01	.02	–.67	–.05 to .02	.49
Gender	.18	.37	.48	–.55 to .91	.62
Provider	–.007	.01	–.43	–.04 to .02	.66

^a Patient Health Questionnaire-9