A life stress and illness model was drawn from studies of recent life changes data and near-future illness reports of a group of Norwegian Navy enlisted men. Results of these studies closely agreed with previously reported findings for US Navy subjects. Both sets of data indicate that the fewer the intervening variables and the less the time interval between subjects' recent life changes and their near-future illness symptoms, the higher is the correlation between these two parameters.
Rahe CRH, Fløistad I, Bergan T, Ringdal R, Gerhardt R, Gunderson EKE, Arthur RJ. A Model for Life Changes and Illness ResearchCross-Cultural Data From the Norwegian Navy. Arch Gen Psychiatry. 1974;31(2):172-177. doi:10.1001/archpsyc.1974.01760140030004