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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Soc Sci Res. 2013 Mar 22;42(5):1402–1409. doi: 10.1016/j.ssresearch.2013.03.004

Table 3.

Multiple Regression Estimates of Effects of Requesting a Saliva Sample on the Log of the Number of Days to Completing the Next Journal (N=300)

Saliva Sample Participation (ref=comparison group)
Sample provided −.35 ** (.12)
Sample not provided −.18 (.15)
Study Participation Characteristics
Below average proportion of journals completed .79 *** (.11)
R2 .20

Notes: Standard errors in parentheses. Model includes controls for key study measures, sociodemographic characteristics, and sample replicate.

*

p < .05;

**

p < .01;

***

p < .001 (two-sided tests)