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. 2020 Oct 29;7:1480–1486. doi: 10.1016/j.toxrep.2020.10.017

Table 4.

Mean percent change from baseline CYP1A2 activity in smokers, switchers to THS, and abstainers in PMI’s clinical studies (per protocol populations).

Study Day 5
Day 90
THS CC SA THS CC SA
% change (95 % CI) % change (95 % CI) % change (95 % CI) % change (95 % CI) % change (95 % CI) % change (95 % CI)
5-day Poland (30) −16.51 (-20.536, -12.481) 12.71 (7.705, 17.724) −14.86 (-20.053, -9.667) NA NA NA
5-day Japan (29) −27.36 (-30.507, -24.216) −0.99 (-5.964, 3.985) −30.46 (-35.314, -25.609) NA NA NA
90-day Japan (31) −21.75 (-25.24, -18.26) 9.65 (2.43, 16.86) −23.81 (-29.21, -18.41) −20.22 (-26.66, -13.78) 15.77 (3.24, -28.30) −15.82 (-23.19, -8.46)
90-day U.S. (32) −32.81 (-36.702, -28.923) 3.56 (-1.121, 8.233) −34.53 (-39.631, -29.433) −31.96 (-40.407, -23.503) −16.71 (-23.868, -9.545) −35.36 (-53.476, -17.243)