The answer is of course they are! There's only an abstract of the paper available, so I can't see demographics, but I'm willing to bet they're more affluent & better-educated, with lower BMI and better exercise habits.
(Other studies have found the same.)
www.jacc.org/doi/full/10....
jacc.org
26-A-9249-ACC ALCOHOL USE AT MID-LIFE AND ALL-CAUSE AND CAUSE-SPECIFIC MORTALITY:
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