On 2015 May 21, Peter Hajek commented:

A great study. Two important results are not in the abstract. Sustained quit rate at 6 months was 5% and 3%, so neither treatment led to smoking cessation; but at six months, 13% still used the gum and 27% continued to use snus (p=0.0006). It is likely that dual use of either product reduces smoke intake and thus reduces harm and it may also facilitate quitting in future. This also suggests that snus is more attractive to smokers despite the initial rating, and so even if the two products were to have the same effect (and the same cost and availability), snus would have better population impact.

On 2015 May 21, Peter Hajek commented:

A great study. Two important results are not in the abstract. Sustained quit rate at 6 months was 5% and 3%, so neither treatment led to smoking cessation; but at six months, 13% still used the gum and 27% continued to use snus (p=0.0006). It is likely that dual use of either product reduces smoke intake and thus reduces harm and it may also facilitate quitting in future. This also suggests that snus is more attractive to smokers despite the initial rating, and so even if the two products were to have the same effect (and the same cost and availability), snus would have better population impact.