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. 2019 Sep 30;116(42):20917–20922. doi: 10.1073/pnas.1905385116

Table 2.

Estimated effects of quality violations on bottled water sales

Violations Tier 1 Tier 2
Model 1 Model 2 Model 3 Model 4 Model 5 Model 6
Any 0.141*** 0.049***
(0.051) (0.018)
Pathogens 0.143*** 0.088***
(0.029) (0.023)
Nitrate 0.141 0.040*
(0.102) (0.022)
Observations 1,120,666 1,120,666 1,120,666 1,120,666 1,120,666 1,120,666
R2 0.984 0.984 0.984 0.984 0.984 0.984

Coefficient estimates of β1 in Eq. 1, for 6 models. For model 1, the estimate represents the average percent change in sales associated with any type of Tier 1 violation; ***significant at the 1% level; *significant at the 10% level. SEs (in parentheses) clustered at county level. All regressions include year, week, and county fixed effects. In addition, regressions control for all variables presented in Eq. 1.