Røyking – en viktig risikofaktor for hjerteinfarkt blant middelaldrende kvinner og menn. En 12-års oppfølging av Finnmarkundersøkelsen
DOI:
https://doi.org/10.5324/nje.v7i2.400Sammendrag
SAMMENDRAG
Få epidemiologiske undersøkelser har undersøkt betydningen av de klassiske risikofaktorer for hjerteinfarkt
i begge kjønn innenfor samme studiepopulasjon. Det har ikke vært avklart om røyking er en like
viktig risikofaktor for kvinner og menn. Sammenhengen mellom røyking, serumlipider, blodtrykk og
hjerteinfarkt ble undersøkt blant 11 843 menn og kvinner i alderen 35-52 år som deltok i Finnmarkundersøkelsen
i 1977-78 og som deretter ble fulgt i 12 år. I alt registrerte vi 495 tilfeller av førstegangs
hjerteinfarkt blant menn og 103 tilfeller blant kvinner. Insidensraten var 4,6 ganger høyere blant menn.
Insidensen var seks ganger høyere blant kvinner og tre ganger høyere blant menn som røykte minst 20
sigaretter daglig sammenlignet med aldri-røykere av samme kjønn. Daglig røyking var en sterkere
risikofaktor for infarkt hos kvinner (RR 3,3; 95% KI, 2,1–5,1) enn hos menn (RR 1,9; 95% KI, 1,6–2,3)
etter justering for andre risikofaktorer. Blant personer yngre enn 45 år på undersøkelsestidspunktet var
kjønnsforskjellen assosiert med røyking større (kvinner: RR 7,1; 95% KI, 2,6–19,1) (menn: RR 2,3;
95% KI, 1,6–3,2). Serum totalkolesterol, HDL kolesterol, systolisk blodtrykk og blodtrykkbehandling
var også signifikante prediktorer, med relativ risiko-estimater av samme størrelsesorden i de to kjønn.
Njølstad I, Arnesen E, Lund-Larsen PG.
Smoking – an important risk factor for myocardial
infarction among middle-aged women and men. A 12-year follow-up of the Finnmark study.
Nor J Epidemiol
ENGLISH SUMMARY
Few epidemiological studies have investigated the relative importance of major coronary risk factors in
the two sexes within the same study population. In particular, it is not clear whether smoking carries a
similar risk for coronary heart disease in men and women. The associations between smoking, serum
lipids, blood pressure and myocardial infarction were examined in a population-based prospective study
of 11 843 men and women aged 35 to 52 years at entry. During 12 years, 495 cases of first myocardial
infarction among men and 103 cases among women were identified. Myocardial infarction incidence
was 4.6 times higher among men. The incidence was increased sixfold in women and threefold in men
who smoked at least 20 cigarettes per day compared with never-smokers, and the rate in female heavy
smokers exceeded that of never-smoking men. Multivariate analysis identified current smoking as a
stronger risk factor in women (relative risk, 3.3; 95% confidence interval [CI], 2.1–5.1) than in men
(relative risk, 1.9; 95% CI, 1.6–2.3). Among those under 45 years old at entry, the smoking related sex
difference was more pronounced (in women: relative risk, 7.1; 95% CI, 2.6–19.1) (in men: relative risk,
2.3; 95% CI, 1.6–3.2). Serum total cholesterol, HDL cholesterol and systolic blood pressure were also
highly significant predictors in both sexes.
1997; 7 (2): 183-189.Downloads
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