Table 6.

Life expectancy reduction by injury severity

Severity	No. of Studies	Participants	Mean Reduction (years)	95% CI	I² (%)	τ²	Q (df), p-value (subgroup test)
Mild	3	—	1.8	−0.9 to − 2.7	31.4	0.89
Moderate	5	—	5.2	−3.9 to − 6.5	42.8	1.45
Severe	7	—	11.4	−9.5 to − 13.2	59.1	2.78	Q = 31.4 (2), p < 0.001