Table 1

Association between sociodemographics and time period with smoking status and number of cigarettes consumed per day

Smoking statusCigarettes per day
Current versus never smokerRecent/past versus never smoker
ORp Value95% CIORp Value95% CIOR*p Value95% CI
Age
 16–541.001.001.00
 55–590.92<0.0010.88 to 0.971.79<0.0011.70 to 1.891.80<0.0011.68 to 1.93
 60–640.71<0.0010.68 to 0.752.19<0.0012.09 to 2.291.91<0.0011.79 to 2.04
 65–690.62<0.0010.59 to 0.662.65<0.0012.53 to 2.781.79<0.0011.66 to 1.92
 70–740.42<0.0010.39 to 0.442.41<0.0012.30 to 2.531.51<0.0011.39 to 1.64
 75–790.29<0.0010.27 to 0.312.35<0.0012.23 to 2.481.180.0011.07 to 1.30
 80–840.21<0.0010.19 to 0.232.44<0.0012.29 to 2.600.940.3300.82 to 1.07
 85+0.13<0.0010.12 to 0.152.36<0.0012.19 to 2.540.730.0010.61 to 0.89
 p Value for trend<0.001<0.001<0.001
Gender
 Men1.34<0.0011.31 to 1.371.39<0.0011.35 to 1.431.49<0.0001.44 to 1.54
 Women1.001.001.00
Social grade
 AB1.001.001.00
 C11.56<0.0011.50 to 1.631.000.8970.97 to 1.041.030.4160.96 to 1.09
 C22.40<0.0012.31 to 2.501.09<0.0011.05 to 1.141.31<0.0011.23 to 1.39
 D2.88<0.0012.76 to 3.000.970.1560.92 to 1.011.31<0.0011.23 to 1.40
 E4.72<0.0014.52 to 4.920.960.0780.92 to 1.001.62<0.0011.53 to 1.72
 p Value for trend<0.0010.008<0.001
Survey years
 2006–20081.001.001.00
 2009–20100.88<0.0010.86 to 0.910.90<0.0010.86 to 0.940.86<0.0010.82 to 0.90
 2011–20120.88<0.0010.86 to 0.911.14<0.0011.10 to 1.190.64<0.0010.61 to 0.68
 2013–20150.80<0.0010.77 to 0.831.26<0.0011.22 to 1.310.55<0.0010.52 to 0.58
 p Value for trend<0.001<0.001<0.001
  • *Ordered logistic regression with the following outcomes: 10 or fewer cigarettes per day, 11–20 cigarettes per day, and 21 or more cigarettes per day.