Table 4.

Group-based trajectory model profiles

	Model parameters, estimate (P)			Severity of top five symptoms, mean (SD)
	Intercept	Linear	Quadratic	Baseline	Week 7	Week 10
Two-group model
Low (n = 42)	−0.65 (< .010)	0.96 (< .0001)	−0.07 (< .0001)	0.43 (0.64)	2.96 (2.05)	2.05 (1.38)
High (n = 88)	1.08 (< .0001)	1.61 (< .0001)	−0.11 (< .0001)	1.57 (1.80)	6.98 (1.90)	6.12 (1.82)
Four-group model
Low (n = 37)	−0.51 (.0295)	0.83 (< .0001)	−0.06 (< .0001)	0.43 (0.67)	2.80 (1.59)	1.99 (1.41)
Medium (n = 57)	0.44 (.016)	1.52 (< .0001)	−0.11 (< .0001)	1.10 (1.22)	6.56 (1.97)	5.07 (1.57)
High (n = 31)	0.99 (.0001)	2.04 (< .0001)	−0.14 (< .0001)	1.53 (1.41)	8.65 (0.91)	7.50 (1.50)
Stable (n = 5)	6.03 (< .0001)	-	-	6.04 (2.93)	5.45 (0.07)	6.33 (0.76)