I. Njolstad et al., BODY HEIGHT, CARDIOVASCULAR RISK-FACTORS, AND RISK OF STROKE IN MIDDLE-AGED MEN AND WOMEN - A 14-YEAR FOLLOW-UP OF THE FINNMARK STUDY, Circulation, 94(11), 1996, pp. 2877-2882
Background Geographical differences in stroke mortality are not fully
explained by population variations in blood pressure and antihypertens
ive treatment. Some studies have suggested that factors connected with
health and nutrition in early life may be related to stroke morbidity
and mortality. Body height is a sensitive marker for socioeconomic co
nditions, but results are conflicting as to whether height is associat
ed with stroke. Methods and Results In a population-based study, we in
vestigated stroke incidence in relation to height and classic cardiova
scular risk factors. A total of 13 266 men and women 35 to 52 years of
age were followed for 14 years, and 241 first events of stroke were r
egistered. Stroke incidence was 36% higher in men. Height was inversel
y related to stroke in a dose-response manner. Per 5-cm increase in he
ight, the age-adjusted risk of stroke was 25% lower in women (P<.0001)
and 18% lower in men (P=.0007). Systolic blood pressure and daily smo
king were positively associated with stroke in both sexes, while serum
triglyceride level was a significant risk factor in women only (relat
ive risk per 1 mmol/L, 1.3; 95% CI, 1.1 to 1.5). The associations rema
ined after adjustment for possible confounders and were also observed
in certain subtypes of stroke. Conclusions The results are consistent
with the theory that factors influencing early growth as well as adult
lifestyle factors contribute to cerebrovascular disease in adult age.