Male: 66 + 13.7 × weight (kg) + 5.0 × height (cm) - 6.8 × age × stress index

Female: 65 + 9.6 × weight (kg) + 1.7 × height (cm) - 4.7 × age × stress index

Stress Index: 1.0 for normal or minor injuries, 1.2 for moderate trauma, 1.4 for severe trauma