education age family income price of cigs in individuals 1 for smokers, 0 for non-smokers 12 21 8500 61 15 12500 61 10 67 12500 61 12 20 12500 61 12 32 20000 15 46 30000 12 58 30000 61 14 27 30000 0 83 6500 12 24 20000 61 16 43 20000 61 14 19 30000 61 16 46 20000 12 58 30000 61 16 54 20000 61 12 20000 61 70 3500 61 14 63 8500 10 32 8500 61 16 22 30000 61 14 53 20000 61 15 44 30000 61 10 63 20000 10 20000 61 14 26 12500 61 12 34 20000 61 8 6B 8500 61 10 30000 61 8 75 12500 62 12 33 20000 62 14 19 30000 62 8 71 20000 62 15 55 12500 62 16 40 20000 62 18 38 30000 62 18 55 6500 62 10 19 4500 62 77 20000 62 10 GB 5500 16 27 30000 62 18 47 30000 62 14 70 12500 62 18 40 30000 62 8 47 20000 18 31 30000 62 14 40 30000 62 14 47 30000 62 14 25 4500 62