1. Significantly below exlpected value Figure 4 Incidence, deaths, and hospital admissions for coronary heart disease in relation to age and sex in Scotland (1962-71). The dark areas are months whic, h are significantly higher than the mean and the lightly stippled areas are significantly lower than the mean. Where there is no entry these points were not significantly differe, ntfrom the mean. The level of significance is p2. Seasonal incidence and mortality of ischaemic heart disease;Dunnigan, M.G.; Harland, W.A.; Fyfe, T.;Lancet,1970
3. Further observations on the incidence of myocardial infarction. 3tournal of Oslo City Hospital;Westlund, K.,1965
4. Le Riche WH. Seasonal variation in ischaemic heart disease;Anderson, T.W.;Lancet,1970
5. Autorhythmometry - procedures for physiological selfmeasurements and their analysis;Halberg, F.; Johnson, E.A.; Nelson, W.; Runge, W.; Southern, R.;Physiology Teacher,1972