Table 4. Hierarchical regression for exploring the positive correlates of PTSD symptoms.

Variables	Block 1 (β)	Block 2 (β)	Block 3 (β)
Age	-0.076	-0.049	-0.031
Gender	0.006	0.044	0.123*
PSS		-0.248**	-0.097
Hope			0.024
Optimism			-0.452**
Resilience			-0.029
F	0.636	5.078**	11.370**
R 2	0.006	0.064	0.238
ΔR 2	0.006	0.059**	0.174**

PTSD = posttraumatic stress disorder, PSS = perceived social support.

Gender: women vs. men.

*P < 0.05,

**P < 0.01.