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Table 2 Multiple logistic regression estimates of odds ratios for lethal outcomes

From: Assaults against U.S. law enforcement officers in the line-of-duty: situational context and predictors of lethality

Independent variable ORa 95% CIb p-value
 Age of LEO 1.02** 1.00 to 1.03 <0.001
 Suspect used Firearm 4.37** 3.10 to 6.10 <0.001
 LEO Wearing Body Armor 0.43** 0.32 to 0.58 <0.001
 LEO Disarmed 2.24** 1.48 to 3.38 <0.001
 LEO Fired Weapon 0.34** 0.27 to 0.44 <0.001
Primary Wound (reference = head/neck/throat)
 Upper Torso/Back 0.68** 0.54 to 0.87 0.002
 Lower Torso/Back 0.24** 0.17 to 0.36 <0.001
 Below Waist 0.03** 0.02 to 0.06 <0.001
Assignment (reference = Two-officer Vehicle)
 One-officer Vehicle 1.45* 1.02 to 2.07 0.041
 Detective 1.40 0.80 to 2.50 0.242
 Off-duty 2.68** 1.50 to 4.81 0.001
 Special Assignment 1.44 0.86 to 2.42 0.165
 Undercover 1.18 0.59 to 2.39 0.641
Encounter (reference = Investigative Activities)
 Disturbance Call 0.99 0.63 to 1.55 0.948
 Domestic Call 1.10 0.70 to 1.74 0.688
 Attempting Other Arrest 1.46 0.96 to 2.21 0.076
 Ambush 3.27** 1.83 to 5.85 <0.001
 Unprovoked Attack 2.24** 1.44 to 3.47 <0.001
 Burglary in Progress 1.06 0.48 to 2.36 0.887
 Robbery in Progress 1.45 0.89 to 3.38 0.139
 Tactical Situations 1.12 0.70 to 1.79 0.647
 Traffic Pursuits and Stops 2.38** 1.64 to 3.46 <0.001
 Drug-related 1.75 0.90 to 3.40 0.097
 Handling Mentally Deranged Persons 0.56 0.27 to 01.16 0.121
 Handling/Transporting/Custody of Prisoners 0.95 0.45 to 2.00 0.887
  1. aOdds ratio
  2. bConfidence interval
  3. *p < 0.05, **p < 0.001