1. Most prospective studies on social network factors have dealt with the impact of social support on mortality from all causes and not particularly on mortality from cardiovascular disease. A more recent follow up of the men born in 1913 and 1923 has, however, shown a significant association between the activity scales and death from cardiovascular disease (Welin, unpublished data). Other authors have also found death from cardiovascular disease" and the prevalence of coronary heart disease'4 to be correlated with indices of social support. The association between low socioeconomic state and coronary heart disease is well known.6` Fibrinogen, on the other hand, has been associated with death from all causes as well.2 Our findings are consistent with a hypothesis that social variables influence fibrinogen concentrations in the blood and thereby the risk of cardiovascular disease
2. 'I'ibblin G. Fibrinogen as a risk factor ltor stroke and myocardial infarction;Wilhelmsen, L.; S%ardsudd, K.; Korsani-Bengtseni, K.; Larsson, B.; Welin, L.,1984
3. Haemostatic funiction anid ischaemic heart disease: principal results of the Northwick Park heart study;TW', Meade; S, Mellows; M, Brozovic;Lancei,1986
4. Plasma fibrinogen-a major coronary risk factor. j R Coll Gen Pract;Stone, M.C.; Thorp, J.M.,1985
5. Fibrinogen and risk of cardiovascular disease. 'I'he Framingham study;Kannel, W.B.; P'A, Wolf; Castelli, W.P.; D'Agostino, R.B.,1987