Table 4

Estimates of responses to plain packaging at postimplementation, with results from logistic regression analyses predicting each outcome

 Never smokers (N=1739) Experimenters/ex-smokers (N=631) Current smokers (N=362)
Less likely to smoke Less likely to smoke Quit response Denormalisation response
Per centOR95% CIp ValuePer centOR95% CIp ValuePer centOR95% CIp ValuePer centOR95% CIp Value
Age in years
 12–1718REF31REF   41REF36REF
 18–24130.710.52 to 0.970.032160.380.22 to 0.64<0.001330.630.32 to 1.240.181280.660.31 to 1.420.290
 Female15REF17REF   31REF31REF
 Male181.290.96 to 1.720.093191.100.68 to 1.790.695361.370.75 to 2.530.306270.890.47 to 1.670.711
 QLD160.860.64 to 1.160.327181.170.72 to 1.910.526310.700.41 to 1.200.192260.780.43 to 1.380.389
 Low15REF19REF   38REF31REF
 Mod–high171.150.83 to 1.590.404170.940.53 to 1.670.845330.780.42 to 1.440.429280.920.47 to 1.780.798
Friends smoke0.990.85 to 1.160.9321.050.89 to 1.230.5910.940.79 to 1.120.5010.960.81 to 1.150.678
House smoke1.110.91 to 1.340.3151.020.89 to 1.180.7580.970.77 to 1.240.8231.421.11 to 1.830.005
Smoking susceptibility
Susceptible201.310.94 to 1.830.109
Cigarettes per day
 ≥2340.970.53 to 1.800.93227%0.670.35 to 1.300.234
  • %s are weighted.

  • ORs, CIs and p values from logistic regression analyses.

  • NSW, New South Wales; QLD, Queensland; SES, socioeconomic status (based on postal code).