Table 1.

Incidence of BCVI based upon ICD-9 code from the NTDB (2007–2014), stratified by age (18–64, 65+) and injury mechanism

	All blunt injuries	≥ 1 risk factor for BCVI	p
18–64 non-ground-level fall	0.70% (14497)	2.8% (10758)	< 0.001
18–64 ground-level fall	0.20% (715)	1.1% (388)	< 0.001
Elderly non-ground level fall	0.59% (2330)*	2.49% (1810)*	< 0.001
Elderly ground level fall	0.15% (1168)† ‡	0.86% (652)† ‡	< 0.001

All data are presented as incidence (number of patients with BCVI)

*Statistically significant difference relative to 18–64 non-ground-level fall group (p < 0.05)

†Statistically significant difference relative to elderly non-ground-level fall group (p < 0.05)

‡Statistically significant difference relative to 18–64 ground-level fall group (p < 0.05)