Massachusetts regimen smoking measures and cigarette design features and selected market categories during 1997–2005 (mean (SE))
| Year | Nicotine yield (mg/cig) | Total nicotine (mg/cig) | Nicotine conc (mg/g) | Number of puffs | % filter ventilation | Proportion of full flavour brands* |
|---|---|---|---|---|---|---|
| *Binomial exact computation of SE. | ||||||
| 1997 | 1.70 (0.05) | 11.85 (0.20) | 11.34 (0.15) | 22.81 (1.70) | 0.40 (0.05) | |
| 1998 | 1.68 (0.03) | 12.56 (0.14) | 17.13 (0.14) | 11.83 (0.12) | 27.39 (1.43) | 0.40 (0.04) |
| 1999 | 1.68 (0.03) | 12.54 (0.14) | 17.27 (0.13) | 11.94 (0.12) | 29.01 (1.46) | 0.37 (0.03) |
| 2000 | 1.73 (0.03) | 13.22 (0.15) | 18.26 (0.15) | 11.89 (0.11) | 29.09 (1.41) | 0.37 (0.03) |
| 2001 | 1.82 (0.03) | 13.67 (0.16) | 18.88 (0.18) | 12.24 (0.12) | 28.18 (1.34) | 0.37 (0.03) |
| 2002 | 1.82 (0.03) | 13.56 (0.20) | 18.59 (0.20) | 12.28 (0.15) | 27.51 (1.31) | 0.38 (0.03) |
| 2003 | 1.84 (0.04) | 14.53 (0.19) | 19.74 (0.16) | 12.50 (0.15) | 28.67(1.39) | 0.35 (0.03) |
| 2004 | 1.91 (0.04) | 14.40 (0.19) | 19.62 (0.16) | 12.34 (0.14) | 26.08 (1.24) | 0.35 (0.03) |
| 2005 | 1.90 (0.04) | 13.93 (0.22) | 18.71 (0.17) | 12.43 (0.16) | 25.36 (1.30) | 0.43 (0.04) |
| Total | 1.79 (0.01) | 13.46 (0.06) | 18.52 (0.06) | 12.13 (0.05) | 27.47 (0.47) | 0.38 (0.01) |