Daily maximum, minimum, dew point temperature; barometric pressure, cloud cover, and wind speed
Mortality from all-cause, CIR, CVD, and IHD
Generalized additive models (GAM) using a cubic smoothing spline
Temperature was found to be a major factor causing deaths from CIR and RD, but not mortality from all-cause. The elderly (age 65) had longer time lags for mortality compared with the younger age groups (age 65).
Mortality from all-cause, NEO CIR, RD, IHD, CBD, PIF,COP, thermal stress from excessive heat and cold
Poisson regression
Heat threshold: daily max. NET ≥ 26°C (heat stroke risk double per unit rise beyond 26°C; cold threshold: daily min. NET ≤ 14°C (hypothermia risk increases 1.3 fold per unit fall below 14°C).
Generalized additive model to regress daily mortalities of the elderly
Significant associations between CVD and DTR at lag day 1 and at lag days 0–1 to 0–5 were discovered. The largest effect was at lag days 0–3 (RR = 1.017; 95% CI = 1.003–1.031).
Mortality from all-cause, CVD and RD, among persons aged ≥ 65 years
A nested case—control approach
AT threshold: 20.8°C (cold days), 28.2°C (hot days). AT was not significantly associated with mortality on hot days. Effect of diurnal AT range on mortality was not observed.