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 stores | 1.38** (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) | – | – | – | – |
Bronx | 1.03 (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) |
Brooklyn | 1.07 (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) |
Queens | 1.06 (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 Island | 1.45** (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 price | 1.96** (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.