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. 2012 Oct;56:203–211.

Table 2.

Partial ejection rates in belted occupants and complete ejection rates in unbelted occupants as a function of various parameters (*p < 0.05). Ejection rates as a function of belt use were calculated with respect to all occupants.

Partial ejection Complete ejection
Belt use *
  Belted 2.4% 0.03%
  Unbelted 3.8% 20%
# of roof inversions * *
  0 4.9% 0.3%
  1 1.3% 18%
  2 3.9% 28%
  3+ 14.1% 77%
Vehicle type * *
  Passenger cars 0.7% 11%
  Light trucks and vans 3.5% 27%
Seating position
  Near side 2.8% 16%
  Far side 1.8% 25%
Roof crush *
  < 3 cm 2.7% 17%
  3 – 15 cm 1.4% 17%
  > 15 cm 3.1% 38%
Curtain airbag deployment
  No 2.4% 20%
  Rollover-sensed 0.5% 19%
  Side impact-sensed 1.3% 3%
Occupant age
  16 – 24 yrs 1.3% 20%
  25 – 49 yrs 1.6% 19%
  50+ yrs 8.4% 25%
Occupant height
  < 160 cm 0.7% 9%
  160 – 180 cm 3.3% 25%
  > 180 cm 1.9% 20%
Occupant weight * *
  < 60 kg 0.7% 11%
  0 – 90 kg 2.8% 33%
  > 90 kg 3.6% 13%
Occupant BMI *
  < 25 1.3% 20%
  25 – 30 3.5% 22%
  > 30 3.4% 18%
Occupant gender
  Male 1.6% 20%
  Female 3.4% 19%