The crucial data that's missing from those figures (although they're probably buried in the references somewhere) is what the initial risk of cancer is.
If the risk of cancer of the larynx in non-drinkers is 0.0001%, then a 1.4-fold increase means that a moderate drinker has a risk of 0.00014%, an absolute increase of 0.00004%. Instead if it's 20%, then a 1.4-fold increase is 28%, an absolute increase of 8%.
You could potentially extrapolate back from the 3.5% of cancer deaths being "alcohol related", but that gives no context around the related risks of light / moderate / heavy drinking.
10 out of 1000 men, and 14 out of 1000 women; those are excess cancer deaths which can be attributed to moderate alcohol consumption (one bottle of wine per week)
> The UK’s Million Women Study reported an excess incidence of 15 per 1000 cancer cases for each additional alcoholic drink consumed per day, 11 due to breast cancer [14, 16].
If the risk of cancer of the larynx in non-drinkers is 0.0001%, then a 1.4-fold increase means that a moderate drinker has a risk of 0.00014%, an absolute increase of 0.00004%. Instead if it's 20%, then a 1.4-fold increase is 28%, an absolute increase of 8%.
You could potentially extrapolate back from the 3.5% of cancer deaths being "alcohol related", but that gives no context around the related risks of light / moderate / heavy drinking.