Table 4.

Growth curve modeling results of PTSD symptoms (PCL-5), b (95% confidence interval).

	Model 1	Model 2
Intercept	25.20 (22.99, 27.41) t = 22.34***	22.29 (19.90, 24.68) t = 18.31***
Baseline PCL-5 ≥ 31 (Ref: PCL < 31)	21.76 (19.09, 24.42) t = 16.00***	26.82 (23.67, 29.96) t = 16.73***
Week	− 2.53 (− 3.09, − 1.98) t = − 8.95***	− 0.81 (− 1.61, − 0.01) t = − 1.99*
Week2	0.06 (0.03, 0.10) t = 3.82***	− 0.01 (− 0.06, 0.04) t = − 0.51
Week * Baseline PCL-5 ≥ 31		− 2.99 (− 4.04, − 1.95) t = − 5.64***
Week2 * Baseline PCL-5 ≥ 31		0.14 (0.07, 0.20) t = 4.11***
Deviance (− 2*Log likelihood)	10,443.05	10,406.47
Akaike inf. crit	10,465.05	10,432.47
Bayesian inf. crit	10,523.04	10,501.01

PCL-5: PTSD Checklist for DSM-5. Baseline PCL-5 indicator is coded: 0 = PCL-5 < 31, 1 = PCL-5 ≥ 31. Model 1 residual degrees of freedom = 1428, and Model 2 residual degrees of freedom = 1426. Likelihood ratio test: (2) = 36.57, p < 0.001.

*p < 0.05; **p < 0.01; ***p < 0.001.