Meta-analysis of excess Monday events and subgroup meta-analyses by gender (where available), diagnostic category, event category, and study size
| Category | Subgroup | Number of studies | Number of events (N) | Amount of heterogeneity* (I2) | Estimated excess M̂% | 95% PI |
|---|---|---|---|---|---|---|
| *The percentage of total variation in the Monday excess that is attributable to heterogeneity between studies. CHD, coronary heart disease; CVD, cardiovascular disease; IHD, ischaemic heart disease; MI, myocardial infarction; SCD, sudden cardiac death; PI, posterior interval; N, total number of events. | ||||||
| Gender | Male | 14 | 656730 | 83.0 | 9.6 | 2.3 to 17.7 |
| Female | 12 | 331064 | 76.2 | 4.0 | −5.4 to 13.7 | |
| Diagnostic category | SCD and Cardiac arrest | 8 | 43513 | 24.6 | 11.6 | −3.3 to 27.4 |
| CHD/IHD, CVD, MI, acute MI | 19 | 1628768 | 90.0 | 4.8 | −0.1 to 9.6 | |
| Event category | Fatal events only | 14 | 1452070 | 85.2 | 5.3 | −1.6 to 12.9 |
| Fatal and non-fatal events | 13 | 220211 | 31.6 | 7.1 | −0.6 to 15.1 | |
| Study size | Larger studies only (N>400) | 23 | 1671468 | 88.6 | 4.9 | 1.1 to 8.7 |
| All studies | 27 | 1672281 | 87.3 | 5.9 | 2.0 to 9.9 | |