Table 3

Results of the segmented regression analysis for cigarette consumption presenting the trend in cigarette consumption previous to the introduction of the PoS display ban, the immediate step level change in cigarette consumption, and the change in the trend after the PoS display ban was introduced compared with the preban period trend

 Trend pre-PoS banStep level changeChange in trend
β95% CIp Valueβ95% CIp Valueβ95% CIp Value
Model 0: unadjusted−0.388−0.520 to −0.255<0.0010.2640.627 to 0.1010.1560.0100.008 to 00270.282
Model 1: +sociodemographics*−0.464−0.593 to −0.335<0.0010.1480.502 to 0.2050.4110.0220.005 to 0.0390.011
Model 2: +e-cigarettes−0.473−0.615 to −0.330<0.0010.1760.580 to 0.2270.3920.0200.003 to 0.0430.091
Model 3: +seasonality−0.487−0.630 to −0.343<0.0010.1830.591 to 0.2250.3800.0190.005 to 0.0420.121
Model 4: +autocorrelation−0.486−0.633 to −0.339<0.0010.1830.602 to 0.2360.3920.0190.006 to 0.0420.131
  • Significant associations are indicated in bold (p<0.05).

  • *Age, gender and social grade.

  • PoS, point of sale.