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 cent	OR	95% CI	p Value	Per cent	OR	95% CI	p Value	Per cent	OR	95% CI	p Value	Per cent	OR	95% CI	p Value
Age in years
12–17	18	REF			31	REF			41	REF			36	REF
18–24	13	0.71	0.52 to 0.97	0.032	16	0.38	0.22 to 0.64	<0.001	33	0.63	0.32 to 1.24	0.181	28	0.66	0.31 to 1.42	0.290
Sex
Female	15	REF			17	REF			31	REF			31	REF
Male	18	1.29	0.96 to 1.72	0.093	19	1.10	0.68 to 1.79	0.695	36	1.37	0.75 to 2.53	0.306	27	0.89	0.47 to 1.67	0.711
State
NSW	17	REF			18	REF			38	REF			31	REF
QLD	16	0.86	0.64 to 1.16	0.327	18	1.17	0.72 to 1.91	0.526	31	0.70	0.41 to 1.20	0.192	26	0.78	0.43 to 1.38	0.389
SES
Low	15	REF			19	REF			38	REF			31	REF
Mod–high	17	1.15	0.83 to 1.59	0.404	17	0.94	0.53 to 1.67	0.845	33	0.78	0.42 to 1.44	0.429	28	0.92	0.47 to 1.78	0.798
Friends smoke	–	0.99	0.85 to 1.16	0.932	–	1.05	0.89 to 1.23	0.591	–	0.94	0.79 to 1.12	0.501	–	0.96	0.81 to 1.15	0.678
House smoke	–	1.11	0.91 to 1.34	0.315	–	1.02	0.89 to 1.18	0.758	–	0.97	0.77 to 1.24	0.823	–	1.42	1.11 to 1.83	0.005
Smoking susceptibility
Non-susceptible	15	REF			n/a				n/a				n/a
Susceptible	20	1.31	0.94 to 1.83	0.109
Cigarettes per day
<2	n/a				n/a				34	REF			31%	REF
≥2									34	0.97	0.53 to 1.80	0.932	27%	0.67	0.35 to 1.30	0.234

%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).