Table 8.

Trend in annual cigarette expenditure per smoker in yuan in 2015 constant prices (predicted from GEE estimation) by age, gender, household income status, education, employment status, and price tier of brands in last purchase of smokers in China, 2007–2008 to 2013–2015.

Cigarette expenditure by age group	2006	2007–2008	2009	2011–2012	2013–2015	Change: 2007–2008 to 2013–2015	p-value	Difference in change over 2007–2008 to 2013–2015 in comparison to age group 18–35	p-value
18–35	1575	2618	2761	2736	2838	221	0.3010
36–55	2065	2965	3157	3177	3003	38	0.6930	−183	0.4260
55+	1819	2673	2598	2664	2581	−92	0.4530	−313	0.1980
Cigarette expenditure by gender	2006	2007–2008	2009	2011–2012	2013–2015	Change: 2007–2008 to 2013–2015	p-value	Difference in change over 2007–2008 to 2013–2015 between male and female	p-value
Male	1958	2848	2972	2986	2883	35	0.6440
Female	1109	2209	1960	2255	1948	−261	0.4110	−296	0.3620
Cigarette expenditure by household income status	2006	2007–2008	2009	2011–2012	2013–2015	Change: 2007–2008 to 2013–2015	p-value	Difference in change over 2007–2008 to 2013–2015 between low- and high-income	p-value
Low-income	1875	2774	2874	2903	2801	26	0.7380
High-income	2568	3412	3662	3636	3465	54	0.8340	28	0.9170
Cigarette expenditure by educational status	2006	2007–2008	2009	2011–2012	2013–2015	Change: 2007–2008 to 2013–2015	p-value	Difference in change over 2007–2008 to 2013–2015 between low and high education	p-value
Low education	2051	2896	2941	3067	2899	3	0.9760
High education	1836	2775	2929	2888	2811	36	0.7010	33	0.8180
Cigarette expenditure by employment status	2006	2007–2008	2009	2011–2012	2013–2015	Change: 2007–2008 to 2013–2015	p-value	Difference in change over 2007–2008 to 2013–2015 between not employed and employed	p-value
Not employed	1973	2772	2746	2800	2677	−95	0.3880
Employed	1923	2878	3070	3085	2990	112	0.2370	207	0.1430
Cigarette expenditure by price tiers of brands	2006	2007–2008	2009	2011–2012	2013–2015	Change: 2007–2008 to 2013–2015	p-value	Difference in change over 2007–2008 to 2013–2015 in comparison to Tier I cigarette brands	p-value
I	4681	6475	6474	6234	5868	−607	0.0170
II	2598	3376	4061	4087	3989	613	0.0060	1220	0.0000
III	1916	2668	2808	2827	2686	17	0.8710	625	0.0230
IV	1428	1975	1929	1897	2118	143	0.4210	750	0.0150
V	1825	1543	1714	1863	1825	282	0.3220	890	0.0200