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Table 2 Relative risk (RR) with 95% confidence interval (CI) of traffic fatalities on warm-season days with extreme heat or precipitation for Boston, MA

From: The risks of warm nights and wet days in the context of climate change: assessing road safety outcomes in Boston, USA and Santo Domingo, Dominican Republic

Condition Boston, MA
RR 95% CI
Hot Days (TMAX   95thp) 0.95 (0.84, 1.06)
Warm Days (85thp ≤ TMAX   95thp) 1.09 (0.90, 1.13)
Warm Nights (TMIN ≤ 95thp) 1.08 (0.97, 1.20)
Wet Days (> 0 mm) 1.01 (0.93, 1.09)
Very Wet Days (>mean) 0.99 (0.90, 1.09)
Extremely Wet Days (>mean of rainy days) 0.95 (0.83, 1.08)
  1. p indicates percentile