Table 2

Changes in ID check compliance, total purchase price, sale below minimum price and packs sold without New York State/City tax stamp, pre and post-T21 (n=827)

 Outcome 1: ID check performed†Outcome 2: Sale at or above legal minimum price†Outcome 3: Total purchase price‡
Model 1 (PRR)Model 2 (PRR)Model 3 (PRR) Model 4 (OLS)
Tobacco 21 law (post vs pre)0.90* (0.82 to 0.99)0.90* (0.82 to 0.99)0.96** (0.93 to 0.99)−0.18** (−0.32 to −0.05)
Independent stores (reference)
Chain stores1.38** (1.26 to 1.51)1.41** (1.29 to 1.54)1.04** (1.02 to 1.07)0.06 (−0.06 to 0.18)
Manhattan (reference)
 Bronx1.03 (0.89 to 1.20)1.10 (0.94 to 1.29)0.94* (0.90 to 0.99)−0.99** (−1.22 to −0.76)
 Brooklyn1.07 (0.92 to 1.25)1.11 (0.96 to 1.30)0.93** (0.88 to 0.98)−0.83** (−1.06 to −0.60)
 Queens1.06 (0.92 to 1.22)1.12 (0.97 to 1.29)1.01 (0.98 to 1.04)−0.57** (−0.74 to −0.39)
 Staten Island1.45** (1.27 to 1.65)1.50** (1.30 to 1.72)0.96 (0.91 to 1.01)−0.54** (−0.79 to −0.29)
Sold at or above legal price1.96** (1.29 to 2.97)
Pack price ($)1.10** (1.04 to 1.16)
ID check performed (yes/no)1.08** (1.04 to 1.13)0.26** (0.09 to 0.43)
  • Source: Author's calculations of study data.

  • *p<0.05; **p<0.01.

  • †Prevalence rate ratios (PRR) and 95% CIs estimated using Poisson regression with robust SEs.

  • ‡Regression coefficients and 95% CIs estimated using OLS regression with robust SEs.

  • OLS, ordinary least squares.