Table 4. Comparison of accident rate and fatal rate (per 100,000 hours) HEMS

Study	Country	Time frame	Accident rate per 100,000 flying hours	Fatal accident rate per 100,000 flying hours
Holland13	Australia	1992-2002	4.38	1.46
Hinkelbein21	Germany	1999-2004	10.9	0.91*
Rhee24	Germany	1982-1987	10.9	4.1
	US	1982-1987	11.7	4.7*
NTSB19	US	1980-1986	13.4*	NA
Harris22	US	1987-1993	3.1	1.61
DeLorenzo23	US	1987-1995	7.44	NA
Blumen10	US	1992-2001	4.83	1.69
Wright20	US	1996-1997	1.7	NA
	US	2000-2004	NA	1.8
	US	2003-2004	4.8	NA

Maximum and minimum
HEMS, helicopter emergency services; NA, not accessible data