Table 3:

Ratios of Officer-Involved Homicides in SHR and NVSS With Respect to FE, By Sheriff-Coroner Status.^a

Ratios			No Sheriff-coroner			Sheriff-coroner
			(County-year, N = 176)			(County-year, N = 926)
			Mean	Std. Dev.	Max	Mean	Std. Dev.	Max
			(1)	(2)	(3)	(4)	(5)	(6)
SHR_FE	All incidents	All years	0.52	0.38	2	0.44c	0.44	2.25
		After 2005	0.51	0.39	2	0.38b	0.39	2
SHR_FE_restricted	Gunshots + use of force	All years	0.7	0.41	2	0.65	0.48	3
		After 2005	0.64	0.41	2	0.55d	0.44	2
NVSS_FE	All incidents	All years	0.45	0.36	1.5	0.38c	0.42	2
		After 2005	0.47	0.36	1.5	0.38c	0.42	1.67
NVSS_FE_restricted	Gunshots + use of force	All years	0.6	0.43	2	0.53c	0.48	2
		After 2005	0.59	0.42	1.6	0.51c	0.48	2

Abbreviations: FE, Fatal Encounters; NVSS, National Vital Statistics System; SHR, Supplementary Homicides Report.

^a Statistics corresponding to the ratios of instances of officer-involved homicides reported in SHR with respect to FE (years: 2000-2016) and in NVSS with respect to FE (years: 2000-2018). California’s 58 counties: Each county-year observation is classified as “sheriff-coroner” if the sheriff was also the coroner figure in that county and year, and as “no sheriff-coroner” if there was a medical examiner or independent coroner in that county and year. Column (4) includes the results from bivariate one-tailed test of underreporting, for the alternative hypothesis that the mean in non-sheriff-coroner counties is larger than in sheriff-coroner counties. Ha: (1)-(4) > 0 at significance levels.

^b p < 0.01.

^c p < 0.05.

^d p < 0.10.