Table 2

Study 1 adjusted ORs of multilevel logistic model of factors influencing availability of e-cigarettes at tobacco retail stores (n=2096)

Study 1Model 1Model 2
VariableAOR (95% CI)AOR (95% CI)
Intercept0.12*** (0.08 to 0.19)0.11*** (0.07 to 0.17)
Level 1. Store
Store type
 Beer, wine and liquor storerefref
 Gas and convenience store4.80*** (6.72 to 19.57)4.75*** (2.96 to 7.63)
 Other establishment type3.59 (0.95 to 13.60)3.45 (0.92 to 12.99)
 Pharmacy and drug stores11.47*** (6.72 to 19.57)11.77*** (6.91 to 20.05)
 Tobacco store40.20*** (18.91 to 85.46)39.78*** (18.77 to 84.31)
 Warehouse clubs and supercenters15.65*** (6.93 to 35.36)14.81*** (6.58 to 33.34)
 Supermarket and other grocery1.19 (0.69 to 2.07)1.18 (0.68 to 2.05)
Advertised price (log)0.51* (0.27to 0.95)0.80 (0.42 to 1.54)
Near schools
 Within 1000 ft of school0.95 (0.69 to 1.30)0.94 (0.69 to 1.28)
 Over 1000 ft of schoolrefref
Store neighbourhood characteristics
 Average per cent Black0.99 (0.99 to 1.00)0.99* (0.98 to 1.00)
 Average per cent Hispanic1.00 (0.99 to 1.00)1.00 (0.99 to 1.00)
 Average median household income (log)1.53** (1.15 to2.05)1.53** (1.15 to 2.04)
Level 2 county (n=97)
ALA smoke-free air grade, 2012  
 A ref
 B 1.03 (0.70 to 1.54)
 C 1.25 (0.81 to 1.93)
 D 1.25 (0.41 to 3.84)
 F 1.63** (1.18 to 2.27)
  • *p<0.05, **p<0.01, ***p<0.001.

  • ALA, American Lung Association.