Impact of changes in specificity of data recording on cause-specific injury mortality in the United States, 1999–2010

Table 1 Linear regression between percent of unspecified injury mortality and year (United States, 1999–2010)

Intent	Age group	b	s _b	95% confidence interval		AdjustedR ²
				Lower limit	Upper limit
Unintentional	0-24 years	-0.037^*	0.013	-0.066	-0.009	0.413
	25-44 years	-0.077^**	0.011	-0.101	-0.053	0.816
	45-64 years	-0.006	0.006	-0.020	0.007	0.004
	65+	-0.746^**	0.047	-0.851	-0.641	0.958
Homicide	0-24 years	0.232^**	0.034	0.156	0.307	0.807
	25-44 years	0.059	0.046	-0.044	0.163	0.056
	45-64 years	0.483^**	0.093	0.277	0.690	0.704
	65+	0.578^**	0.754	0.223	0.932	0.525
Suicide	0-24 years	-0.010	0.012	-0.038	0.018	-0.031
	25-44 years	0.007	0.008	-0.010	0.024	-0.024
	45-64 years	0.011	0.008	-0.006	0.028	0.091
	65+	0.001	0.008	-0.017	0.020	-0.097

^*: P < 0.05; ^**: P < 0.01.
Note: Dependent variable = percent of unspecified injury mortality, independent variable = year.

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