Table 1

Summary of studies presenting results on the weekly distribution of fatal coronary events, ordered by total number of events

Reference	Population(s)	Period	Diagnostic category	Number of events (N)	Days with a significant excess	Monday excess M̂%	95% CI
CHD, coronary heart disease; CVD, cardiovascular disease; IHD, ischaemic heart disease; MI, myocardial infarction; SCD, sudden cardiac death; NA, not available. *No statistical testing done but numbers involved make it highly likely that observed increase is statistically significant. †Subgroup of CHD deaths outside hospital in men under 65 years old. ‡Subgroup of men (N = 69934). §Subgroup of men age 25–54 years (N = 6259). ¶Number of events estimated from graphical results.
Rogot	USA	1962–66	CHD	>2 million	Monday*	NA
AIHW	Australia	1979–99	Acute MI	429255	Monday	2.0	1.3 to 2.8
Macfarlane	England and Wales	1969–72	Acute MI	373598	Monday	3.2	2.4 to 4.0
Evans	Scotland	1986–95	CHD	170244	Monday, Saturday†, Sunday†	3.1	1.9 to 4.3
Chenet, 1998	Moscow	1993–95	CVD	117286	Monday‡, Saturday‡, Sunday‡	0.8	−0.6 to 2.2
Näyhä	Finland	1961–72	IHD	113246	Monday, Saturday	3.4	2.0 to 4.8
Massing	Saxony, Germany	1968–77	MI	84538	Monday§, Saturday§	0.8	−0.9 to 2.4
Barnett	39 centres worldwide	1980–95	MI	74068	Monday	6.8	5.0 to 8.6
Chenet, 2001	Lithuania	1988–97	CVD and IHD	41452	Monday, Saturday, Sunday	9.7	7.3 to 12.2
Arntz	Berlin	1987–91	SCD	24061	Monday	8.3	5.1 to 11.5
Macfarlane	Greater London	1965–66	IHD	22813	Monday	4.0	0.8 to 7.2
Beard	Rochester, USA	1950–75	SCD	1054	None	−3.0	−17.6 to 11.6
Pasqualetti	Aquila, Italy	1970–87	SCD	269	None	24.9¶	−7.1 to 56.9
Myers	Newcastle, UK	1971–72	SCD	100	None	26.0	−26.7 to 78.7
Nicolau	Bucharest	1981–84	CVD	86	Monday	70.9	7.4 to 134.5