Table 3

General estimating equations for binary outcomes: pack appraisal

Dependent variable: pack appraisal
1=Positive apprasial (score ≥16)
0=Negative appraisal (score<16)
95% CI
n=1001AORLowerUpperp Value
Block 1
 Close friends smoking
  Most do not smoke 8421.00
  Majority smoke471.020.561.890.939
  Do not know/not stated1121.110.751.630.603
 Sibling smoking
  No siblings smoke8361.00
  Any siblings smoke1370.820.551.220.318
  Do not know/not stated280.680.301.550.360
 Parental smoking
  Neither parent smokes5671.00
  Either parent smokes3750.900.681.190.453
  Not sure/not stated/no mum/dad591.250.752.090.386
Block 2
 Gender
  Male5151.00
  Female4861.060.821.360.656
 Socioeconomic group
  ABC14611.00
  C2DE5400.950.731.240.713
 Age10011.221.131.32<0.001
Block 3
 Pack
  Mayfair10011.00
  Silk cut superslims10011.941.632.32<0.001
  Marlboro bright leaf10011.561.291.88<0.001
  Pall mall10012.351.962.81<0.001
  Plain10010.540.430.67<0.001
Model summary at each blockTest of model coefficientsQIC
Wald χ2dfp Value
Block 14.9960.5467080.07
Block 217.033<0.0016808.46
Block 3178.594<0.0016772.13
Final model183.1913<0.0016579.37