Method | % increase | 95% CI |
---|---|---|
*More lags of winter temperature (lags 2–4). | ||
†Time stratified approach to matching on season and temperature (rounded to the nearest degree Celsius. | ||
‡Poisson regression analysis with penalised splines to control for season and weather. | ||
More winter temperature lags* | ||
Two stage | 0.39 | 0.23 to 0.56 |
One stage | 0.32 | 0.19 to 0.46 |
Time stratified with temperature matching† | ||
Two stage | 0.39 | 0.19 to 0.58 |
One stage | 0.53 | 0.34 to 0.72 |
Poisson regression‡ | 0.40 | 0.18, 0.62 |