Skip to main content

Table 6 Coefficients from multilevel models assessing change in cannabis knowledge, cannabis use and harms from cannabis

From: Universal cannabis outcomes from the Climate and Preventure (CAP) study: a cluster randomised controlled trial

 

Linear change

Quadratic change

Outcome

b

95% CI

p

b

95% CI

p

Cannabis knowledge

 Climate vs Control (ref)

1.97

1.33 to 2.60

<  0.001

−0.62

−0.82 to −0.41

<  0.001

 CAP vs Control (ref)

2.25

1.62 to 2.88

<  0.001

−0.80

−1.00 to −0.59

<  0.001

 CAP vs Climate (ref)

0.28

− 0.34 to 0.91

0.37

−0.18

−0.38 to 0.03

0.09

Outcome

β

Odds ratio

OR 95% CI

p

β

Odds ratio

OR 95% CI

p

Cannabis use

 Climate vs Control (ref)

−0.12

0.89

0.40 to 1.97

0.77

0.043

1.044

0.81 to 1.35

0.74

 CAP vs Control (ref)

−0.08

0.93

0.42 to 2.03

0.85

0.041

1.042

0.81 to 1.35

0.76

 CAP vs Climate (ref)

0.04

1.04

0.48 to 2.25

0.91

−0.002

0.998

0.77 to 1.29

0.99

Cannabis harms

 Climate vs Control (ref)

−0.004

0.996

0.68 to 1.45

0.98

–

–

–

–

 CAP vs Control (ref)

−0.28

0.759

0.53 to 1.08

0.12

–

–

–

–

 CAP vs Climate (ref)

−0.27

0.762

0.54 to 1.07

0.12

–

–

–

–

  1. Health education as usual (Control) was compared to a universal intervention (Climate) and combined universal and selective intervention (CAP). Time was coded in terms of number of years since baseline, so the odds ratios for linear change represent the relative change in odds over one year
  2. b: Unstandardized coefficient on the scale of the original response
  3. β: Coefficient on the logit odds scale
  4. OR 95% CI: 95% confidence interval for the odds ratio
Back to article page

Substance Abuse Treatment, Prevention, and Policy

ISSN: 1747-597X