Table 1

 Analysis of the pre/post 1 January changes in mortality rates for two categories of cardiac causes for the millennium compared with the four previous and two after (control) years

Cause of deathPre* controlPost* controlPre* millenniumPost* millenniumRate† change differencep Value‡
*Expressed as rate per day per 100000 population. †Estimated from a two way analysis of variance with year and pre/post 1 January as factors. ‡For the hypothesis that the difference in rate change is zero. IHD, ischaemic heart disease; CHD, congestive heart disease.