highly significantP < 0.001
The difference exceeds 10 mL/yr and is highly significant ( P < 0.001) in all the analyses shown.
The difference exceeds 10 mL/yr and is highly significant ( P < 0.001) in all the analyses shown.
The trend in betas is generally greater in continuing smokers than in quitters or ex-smokers, though the difference in trends between continuing smokers and either quitters or ex-smokers is significant in only one case: study 5, in which a marked trend is seen in continuing smokers, but no trend is seen in ex-smokers.