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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: Sleep Med. 2017 Mar 18;34:141–147. doi: 10.1016/j.sleep.2017.02.024

Table 2.

Hierarchical regression models examining the joint effects of PTE type (interpersonal vs. accidental) on sleep

Beta t Sig. Adjusted R Square F Change Sig. F Change?

Step 1: 0.005 2.970 0.019*

Female gender 0.081 3.123 0.002*

Ethnicity
 AA 0.022 0.800 0.424
 Asian 0.029 1.085 0.278
 Other 0.027 0.981 0.327

Step 2: 0.047 64.937 0.000*

Interpersonal PTE 0.207 8.058 0.000*

Female gender 0.050 1.922 0.055

Ethnicity:
 AA 0.028 1.040 0.298
 Asian 0.037 1.405 0.160
 Other 0.022 0.824 0.410

Step 3: 0.046 0.509 0.476

Interpersonal PTE 0.202 7.589 0.000*

Accidental PTE 0.019 0.713 0.476

Female gender 0.051 1.960 0.050*

Ethnicity:
 AA 0.028 1.046 0.296
 Asian 0.038 1.420 0.156
 Other 0.023 0.866 0.387

Abbreviations: AA = African American; PTE = potentially traumatic event; Sig. = significant.

*

indicates that this regression coefficient or change is significant.