Table 2.

Standardized Mortality Ratios for Deaths From Injuries in the Agricultural Health Study Cohort, North Carolina and Iowa, 1993–2007^a

Cause of Death	Applicators (n = 496)				Spouses (n = 66)
	Observed	Expected	SMRb	95% CIc	Observed	Expected	SMRb	95% CIc
Transportation injuries	167	196	0.85*	0.73, 0.99	29	50	0.58*	0.39, 0.83
Railway, water, and air transportation	8	12	0.67	0.29, 1.32	0
Motor vehicle—driver	99	117	0.85	0.69, 1.03	15	27	0.56*	0.31, 0.92
Motor vehicle—passenger	9	15	0.59	0.27, 1.12	10	12	0.81	0.39, 1.49
Motor vehicle—pedestrian	5	14	0.36*	0.12, 0.85	1
Motor vehicle—other and unspecified	18	23	0.78	0.46, 1.24	2
Motor vehicle—nontraffic	25	9	2.80*	1.81, 4.14	0
Other transportation injuries	3	6			1
Falls	43	68	0.63*	0.46, 0.85	6	18	0.34*	0.12, 0.73
Falls into holes	12	15	0.78	0.40, 1.37	3
Falls from buildings or structures	7	4	1.76	0.65, 3.84	0
Other falls	24	49	0.49*	0.32, 0.73	3
Other injury (major)	164	169	0.97	0.83, 1.13	17	41	0.42*	0.24, 0.67
Collision with objects	18	9	2.12*	1.25, 3.34	1
Machine	62	15	4.15*	3.18, 5.31	3
Suffocation	15	22	0.69	0.39, 1.14	3
Fire	8	15	0.53	0.23, 1.04	0
Accidental poisoning	15	39	0.39*	0.22, 0.64	4
Medical complications	7	10	0.67	0.27, 1.38	3
Forces of nature	5	6	0.83	0.34, 2.41	0
Other injuries	34	53	0.64*	0.44, 0.90	3
Violence	122	219	0.56*	0.46, 0.67	14	36	0.39*	0.21, 0.65
Intentional self-harm	106	187	0.57*	0.46, 0.69	9	28	0.32*	0.15, 0.61
Assault and homicide	16	32	0.50*	0.28, 0.81	5	8	0.61	0.20, 1.43

Abbreviations: CI, confidence interval; SMR, standardized mortality ratio.

^*Significant at P = 0.05 based on confidence interval excluding 1.0.

^aAll estimates were adjusted for age, calendar year, gender, race, and state.

^bSMRs were not estimated for <5 observed deaths.

^cCalculated using Byar's approximation to the Poisson exact test.