Table 3.

Multivariable hierarchical linear regression models for posttraumatic stress symptoms

3a. Physical Functioning
Exposure	β	R2	ΔR2
Step 1		0.03
Mother education	0.04
Child age	0.02
Child sex	−0.03
Time since diagnosis	−0.08
Step 2		0.12
Child physical functioning	0.004		0.09†
Step 3		0.47
Caregiver strain	0.7†		0.35†

3b. Emotional Functioning
Exposure	β	R2	ΔR2
Step 1		0.03
Mother education	0.04
Child age	0.02
Child sex	−0.03
Time since diagnosis	−0.08
Step 2		0.18
Child emotional functioning	−0.02		0.15†
Step 3		0.47
Caregiver strain	0.68†		0.30†

3c. Social Functioning
Exposure	β	R2	ΔR2
Step 1		0.03
Mother education	0.06
Child age	0.02
Child sex	−0.03
Time since diagnosis	−0.08
Step 2		0.19
Child social functioning	−0.08		0.16†
Step 3		0.48
Caregiver strain	0.66†		0.29†

3d. Cognitive Functioning
Exposure	β	R2	ΔR2
Step 1		0.03
Mother education	0.03
Child age	0.02
Child sex	−0.03
Time since diagnosis	−0.08
Step 2		0.11
Child cognitive functioning	0.05		0.08†
Step 3		0.48
Caregiver strain	0.72†		0.37†

^†P≤ 0.001