Table 4

Associations between point-of-sale (PoS) tobacco display ban implementation with accessibility of tobacco and regular smoking stratified by gender through interaction analysis

OR (95% CI)*
Regular smokingPerceived accessibility
Male
(n=85 610)
Female
(n=89 268)
P values†Male
(n=85 610)
Female
(n=89 268)
P values†
Country level
PoS display ban implemented
 NoRefRefRefRef
 Yes0.85 (0.78 to 0.93)0.85 (0.77 to 0.93)0.8950.99 (0.93 to 1.06)0.95 (0.89 to 1.02)0.253
Time
 2007RefRefRefRef
 20111.03 (0.98 to 1.08)0.95 (0.90 to 0.99)0.0080.91 (0.88 to 0.95)0.88 (0.85 to 0.92)0.175
 20150.67 (0.64 to 0.70)0.66 (0.63 to 0.69)0.6800.71 (0.68 to 0.74)0.72 (0.70 to 0.75)0.453
Age restriction
 NoRefRefRefRef
 Yes1.17 (1.08 to 1.26)0.96 (0.89 to 1.03)<0.0010.71 (0.67 to 0.76)0.77 (0.73 to 0.82)0.008
TCS
 Per 10-point increase0.92 (0.87 to 0.96)1.02 (0.98 to 1.07)<0.0010.97 (0.94 to 1.01)0.95 (0.91 to 0.98)0.013
Individual level
Regular smoking
 NoRefRef
 Yes2.61 (2.51 to 2.71)3.34 (3.21 to 3.47)<0.001
Parental education
 RII0.57 (0.52 to 0.60)0.56 (0.52 to 0.60)0.8971.22 (1.15 to 1.29)1.11 (1.05 to 1.17)0.016
  • *Models include time, PoS display ban implementation, gender, parental education, regular smoking (for accessibility only), tobacco control scale, age restriction, gender*PoS display ban implementation, gender*parental education, gender*regular smoking, gender*TCS and gender*age restriction.

  • †P values for interaction with gender.

  • RII, Relative Index of Inequality for parental education; TCS, Tobacco Control Scale.