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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: Addict Behav. 2017 Jan 4;67:100–105. doi: 10.1016/j.addbeh.2017.01.001

Table 2.

Association between snus trial and ratings of SLT as less harmful than cigarettes on direct and indirect measures.

Tried Snus n (weighted %)
No Yes OR (95% CI)* p Cox & Snell R2
Model 1 .007
    Direct Measure: SLT Rated Less Harmful
        No 2669 (91.0) 147 (9.0) 1.00 (Ref)
        Yes 353 (82.1) 43 (17.9) 2.21 (1.11,4.39) .025
Model 2 .005
    Indirect Measure: SLT Rated Less Harmful
        No 2155 (91.5) 124 (8.5) 1.00 (Ref)
        Yes 763 (86.4) 61 (13.6) 1.69 (1.00,2.87) .050
Model 3 .011
    Direct Measure: SLT Rated Less Harmful
        No ... ... 1.00 (Ref)
        Yes ... ... 1.99 (0.91,4.33) .082
    Indirect Measure: SLT Rated Less Harmful
        No ... ... 1.00 (Ref)
        Yes ... ... 1.50 (0.84,2.67) .165
*

OR = Odds ratio from binary logistic regression of snus trial on the direct measure (Model 1), indirect measure (Model 2), and the direct and indirect measures entered simultaneously (Model 3). As is standard practice in criterion validation studies, models did not adjust for other variables.