Table 1.  Price and tax changes necessary to obtain same effect as smoke-free workplaces Location Effect of smoke-free workplace on consumption Equivalent price effect (per pack) Price/tax increase Equivalent tax effect (per pack) Relative change* Absolute change Relative change Absolute change Within workplace (consumption/employee) US 29% +73% $3.12 to $5.41 $2.29 +300% $0.76 to $3.05 UK -29% +73% £4.30§ to £7.45 £3.15 +92% £3.44§ to £6.59 In population (consumption/capita) US -4.5%¶ +11% $3.12 to $3.47 $0.35 +47% $0.76 to $1.11 UK -7.6%¶ +19% £4.30§ to £5.12 £0.82 +24% £3.44§ to £4.26 Note: Numbers may not add up because of rounding. As of June 2002: £1=$1.50=1.55; $1=£0.67=1.03. * Smoke-free workplace effect/price elasticity of cigarette consumption (0.429) (see text). From table 1 in full version on BMJ's website (bmj.com). Average price or tax in United States in 2000.34 § Average price or tax for 20 Marlboros in United Kingdom in 2001 (Clive Bates, personal communication). ¶ Effect on consumption per employee of smoke-free workplace (29%)×proportion employed indoors (50%30 31)×proportion not yet smoke-free (31%32) for US; for UK figures are 29%×50%30 31×52%.33