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. Author manuscript; available in PMC: 2008 Jun 15.
Published in final edited form as: Drug Alcohol Depend. 2006 Dec 13;89(1):42–51. doi: 10.1016/j.drugalcdep.2006.11.017

Table 4.

The relationship of FTND with NDSS factors in linear regression models: regression coefficient (β; and 95% confidence intervals, CI) and model explanation (R2) in models unadjusted and adjusted models for each NDSS factor (n=1155 smokers)

Unadjusted Adjusted
NDSS factor (continuous variables) β (95% CI) R2 Β (95% CI) R2
Drive/Priority 1.41 (1.28–1.53) 0.33 1.25 (1.14–1.36)
Stereotypy/Continuity 0.92 (0.78–1.06) 0.16 0.76 (0.64–0.88) 0.46
Tolerance 0.79 (0.63–0.95) 0.13 0.60 (0.47–0.72)

Adjusted for dependence of family members within families