eTABLE 1.
Association of “Recent” Relative to “No Recent” Family/Friend Events and Sudden Cardiac Arrest: Use of Additional Control Periods and Shorter Hazard Periods
| Hazard Period | Control Periods | OR (95% CI) a |
|---|---|---|
| 1 month | >1-2, >2-3, ..., >11-12 months (11 month long periods) | 2.1 (1.5, 3.0) |
| 1 week | 2, 3, ..., 24 weeks (23 week long periods) | 2.1 (1.1, 3.9)b |
| ≥1-2 weeks | ≥3-4, ≥5-6, ..., ≥23-24 weeks (11 two-week long periods) | 1.5 (0.9, 2.6)b |
a
ORs are adjusted for season.
b
Results are restricted to the subset of subjects who reported the number of weeks before the sudden cardiac arrest for the family/friend events (n = 332/490).