Table 6.

Overall mean percent change for constructs and associated statistics without Ariel et al.'s 10 global studies

		95% CI
Construct	Mean % change	Lower	Upper	k	z	p(z)	Q	p(Q)	τ
Complaints against officer	−18.4	−32.7	−1.0	16	−2.062	.039	23.535	.073	0.222
Use of force	−12.8	−27.1	4.4	16	−1.490	.136	48.093	.000	0.278
Assault on officer/officer injuries/resistance	34.2	−0.1	80.1	5	1.956	.050	1.322	.858	0.000

Note: Percent change is based on the relative incident rate ratio (RIRR). For values of RIRR >1, the percent change is RIRR − 1. For values of RIRR <1 it is 1 − RIRR. A RIRR reflects the difference‐in‐difference percent change in counts. Negative numbers reflect lower counts for the BWC condition. k = number of effect sizes; z = z‐test; p(z) = p‐value for z‐test; Q = homogeneity statistic; p(Q) = p‐value for homogeneity statistic; τ = square‐root of the random effects variance component.