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. Author manuscript; available in PMC: 2014 Jan 8.
Published in final edited form as: Subst Use Misuse. 2012 Sep 4;47(12):10.3109/10826084.2012.716481. doi: 10.3109/10826084.2012.716481

Table 4.

Wave 1 – Wave 2 Change in Availability Outcomes for HLPs (Composite Variable) and Association of Exposure with Change, Controlling for Selection Bias and Intraclass Correlation.

t OR (95% CI)
HLPs Present in Home
  Intercept −.06 .97(.28, 3.32)
  Inv. Mill's Ratio 1.07 1.64(.67, 4.02)
  Wave −4.10** .33(.19, .56)
  Direct Exp. −.81 .76(.39, 1.47)
  Indirect Exp. 2.19* 1.34(1.03, 1.75)
  Direct Exp. X Wave −1.88+ .56(.31, 1.03)
  Indirect Exp. X Wave .92 1.10(.90, 1.33)
  Intraclass Correlation .08
HLPs Locked
  Intercept 2.30* 6.42(1.32, 31.35)
  Inv. Mill's Ratio −4.33** .07(.02, .24)
  Wave .98 1.28(.78, 2.12)
  Direct Exp. .34 1.16(.50, 2.69)
  Indirect Exp. .06 1.01(.73, 1.39)
  Direct Exp. X Wave .83 1.31(.69, 2.50)
  Indirect Exp. X Wave −.57 .93(.72, 1.19)
  Intraclass Correlation .20
HLPs Monitored
  Intercept 4.89** 52.19(10.67, 255.26)
  Inv. Mill's Ratio −3.20** .15(.05, .48)
  Wave .12 1.04(.57, 1.90)
  Direct Exp. .69 1.39(.55, 3.52)
  Indirect Exp. .40 1.07(.76, 1.51)
  Direct Exp. X Wave .01 1.00(.48, 2.11)
  Indirect Exp. X Wave .05 1.01(.77, 1.31)
  Intraclass Correlation .22

Note:

**

p<.01

*

p<.05; df for level one tests range between 738 and 766 and df for level two tests range between 480 and 492