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. Author manuscript; available in PMC: 2014 May 28.
Published in final edited form as: Tob Control. 2013 May 22;23(0 1):i54–i60. doi: 10.1136/tobaccocontrol-2012-050922

Table 2.

Descriptive statistics, 2006–2009

Variable description Mean SD
Binary variables
    Male 0.963 –
    Monthly household income: < ¥1000 0.161 –
    Monthly household income: ¥1000–2999 0.464 –
    Monthly household income: ¥3000–4999 0.240 –
    Monthly household income: ≥ ¥5000 0.134 –
    Education: Primary school or less 0.125 –
    Education: Middle school 0.327 –
    Education: High school 0.358 –
    Education: Beyond secondary school 0.190 –
    Wave 1 (2006) 0.332 –
    Wave 2 (2007–08) 0.365 –
    Wave 3 (2009) 0.303 –
    City: Beijing 0.172 –
    City: Shenyang 0.138 –
    City: Shanghai 0.224 –
    City: Changsha 0.185 –
    City: Guangzhou 0.142 –
    City: Yinchuan 0.139 –
Continuous variables
    Age at Wave 1 50.8 12.3
    Cigarette tier price, nominal 6.32 6.36
    Cigarette tier price, real, in 2006 terms 6.24 6.30
    Average daily cigarette consumption at Wave 1 17.7 10.8

Binary variables equal 1 if the description applies and 0 otherwise. The sample includes 3477 smokers and 8552 person-years, weighted based on the complex survey design.