TABLE 3.

Sensitivity Analyses Showing the Effects of Simulated Misclassification Because of Undetected Gun Possession: Philadelphia, PA, 2003–2006

% of Control Participants Without Guns Randomly Recoded to Having Gunsa	% of Case Participants Without Guns Randomly Recoded to Having Gunsb
	0%	1%	3%	5%	10%
All gun assaults
0%	4.46*	4.80*	5.45*	6.22*	8.25**
1%	3.66	3.83	4.51*	5.07*	6.91**
3%	2.49	2.69	3.11	3.51	4.81*
5%	1.86	2.01	2.37	2.23	3.07*
10%	1.03	1.14	1.32	1.26	1.78
Fatal gun assaults
0%	4.23*	4.76*	5.48*	6.30*	8.36**
1%	3.62	3.87*	4.44*	5.28*	7.21*
3%	2.52	2.85	3.35	3.84	4.45*
5%	1.89	2.29	2.54	2.87	4.01
10%	1.03	1.31	1.53	1.74	2.31
Gun assaults where victim had at least some chance to resist
0%	5.45*	4.78*	5.66*	6.27*	8.34**
1%	3.59	4.75	5.48	6.24*	8.73*
3%	2.46	3.25	3.82	4.34	6.00*
5%	1.86	2.53	2.80	3.12	4.36
10%	1.03	1.42	1.66	1.83	2.48

^aFor instance, to compensate for control participants who failed to disclose their gun possession.

^bFor instance, to compensate for case participants who discarded their guns after they were shot.

*P ≤ .05; **P ≤ .01; base adjusted odds ratio is adjusted odds ratios from full models with 0% of case and 0% of control participants recoded.