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Table 2 Associations between weather and shootings in Chicago

From: The association between weather and the number of daily shootings in Chicago (2012–2016)

Variable% change in shootings95%CIConfounders adjusted for:
Temperature (High)a
On weekdays34.0(28.1, 40.2)***n/a
On weekends/holidays41.6(34.7, 48.9)***
Δ in temperature from historical average33.8(29.1, 39.7)***Prec. Type
Precipitation Type  Temperature
Rain−4.4(−10.4, 1.9)
Snow0.1(−9.3, 12.3)
Thunderstorm−2.2(−9.8, 5.3)
Precipitation Amount b−4.1(−9.1, 0.2)Prec. Type, Temperature
Humidity (Max)a−0.5(−3.1, 2.2)Temperature
Wind (Max)a−1.8(−4.7, 1.2)Prec. Type
Year (Ref = 2012)
2013−13.0(−4.4, −20.8)**n/a
20142.8(−6.3, 12.7)n/a
201518.7(8.4, 30.0)***n/a
201673.4(58.7, 89.6)***n/a
  1. afor every ten unit increase (°C, %, and km/hr., respectively). bfor every 1 cm
  2. * < 0.05, ** < 0.01, *** < 0.001