Table 4.

Logistic Regression Analyses Investigating Whether Demographic Differences Between Phone and Online Samples Accounted for Differences in Alcohol Use, Substance Use, and Scoring Above the Clinical Cut-Off on PTSD

Variable	B	SE	Odds Ratio	Wald
Alcohol Use in Past Year
Age	−.04	.02	0.97	5.62*
Income	.02	.01	1.02	6.17*
Disability1	.85	.32	2.35	7.32**
Sample Type2	−.41	.30	0.66	1.90
Substance Use Ever
Minors3	.37	.19	1.45	4.06*
Disability1	−.66	.23	0.52	8.31**
Sample Type2	−.52	.19	0.60	7.74**
Scoring Above PTSD Clinical Cut-Off
Currently in a Relationship4	1.60	.72	4.98	5.00*
Disability1	−1.50	.53	0.22	8.08**
Sample Type2	0.82	.60	2.27	1.87

¹Disability: 1 = Either respondent and/or his partner had a disability, 0 = Neither respondent nor his reported had a disability.

²Sample Type: 1 = Online, 2 = Phone.

³Minors: 1 = Respondent had minor children at home, 0 = Respondent did not have minor children at home.

⁴Currently in a Relationship: 1 = Yes, 0 = No.

^*p < .05,

^**p < .01,

^***p < .001.