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. 2016 Jun 2;12:24. doi: 10.1186/s12992-016-0161-0

Table 7.

Between country difference-in-difference estimates for loge rate of change in soft drink category sales volumes per capita before and after ratification (2006) and enforcement (2009) of the US-Peru FTA

Year Estimate Unadjusted Adjusted for GDP Adjusted for GDP & time trends N
Carbonates 2006 Diff-in-diff −1.44*** (0.53) −1.46*** (0.56) −1.39*** (0.48) 30
R2 0.30 (p = 0.006) 0.30 (p = 0.009) 0.57 (p = 0.004)
2009 Diff-in-diff −1.36*** (0.50) −1.35*** (0.51) −1.35** (0.58) 30
R2 0.37 (p = 0.006) 0.38 (p = 0.009) 0.38 (p = 0.019
Bottled water 2006 Diff-in-diff 0.62* (0.32) 0.59* (0.33) 0.62* (0.32) 30
R2 0.68 (p = 0.051) 0.69 (p = 0.07) 0.74 (p = 0.051)
2009 Diff-in-diff 0.63** (0.31) 0.59* (0.34) 0.63** (0.26) 30
R2 0.45 (p = 0.043) 0.47 (p = 0.085) 0.77 (p = 0.016)
Juice 2006 Diff-in-diff 0.09 (0.81) 0.48 (0.69) 0.53 (0.66) 30
R2 0.04 0.47 0.55
2009 Diff-in-diff −0.47 (0.60) −0.02 (0.52) −0.21 (0.55) 30
R2 0.04 0.53 0.55
Sports & energy drinks 2006 Diff-in-diff 0.12 (0.86) 0.27 (0.73) 0.26 (0.75) 30
R2 0.11 0.34 0.37
2009 Diff-in-diff −0.90 (0.65) −0.63 (0.58) −0.67 (0.63) 30
R2 0.13 0.35 0.38

Notes: *p < 0.1; **p < 0.05; ***p < 0.01, standard-errors in parentheses