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. 2021 May 19;22(3):498–509. doi: 10.5811/westjem.2021.3.50263

Table 7.

Bivariate and multivariable logistic regression analyses regarding the storage of rifle/shotgun and handgun ammunition in the homes of adolescent survey respondents.a

Crosstab analysis Logistic regression analysis


Ammunition not locked n (Row %)b Ammunition locked with firearms n (Row %)b Ammunition locked separately n (Row %)b P -value Odds ratio Confidence interval
Rifle/shotgun ammunition storage
 Group N 291 (28%) 319 (31%) 431 (41%)
 Gender P = 0.148
  Male 178 (30%) 171 (28%) 253 (42%) 1.16 0.88–1.54
  Female 112 (26%) 147 (34%) 177 (41%) 1.0 (ref)
 Age P = 0.012
  16–18 years 216 (31%) 203 (29%) 283 (40%) 1.59 1.17–2.16
  13–15 years 75 (22%) 116 (34%) 148 (44%) 1.0 (ref)
 Residence P = 0.011
  Farm 181 (30%) 172 (29%) 247 (41%) 1.86 1.29–2.69
  Country/not a farm 62 (32%) 60 (31%) 72 (37%) 2.03 1.30–3.16
  Town 47 (19%) 86 (35%) 111 (45%) 1.0 (ref)
 Race P = 0.299
  White/Caucasian 310 (31%) 413 (41%) 284 (28%) 1.0 (ref)
  Other races 8 (24%) 18 (55%) 7 (21%) 0.74 0.31–1.74
 Unlocked rifles c P < 0.001
  Yes 235 (43%) 133 (24%) 179 (33%) Not in the Analysis
  No 52 (11%) 179 (38%) 241 (51%)
Handgun ammunition storage
 Group N 176 (25%) 255 (36%) 282 (40%)
 Gender P = 0.030
  Male 115 (28%) 136 (33%) 155 (38%) 1.93 1.38–2.71
  Female 60 (20%) 117 (38%) 127 (42%) 1.0 (ref)
 Age P = 0.111
  16–18 years 126 (27%) 158 (34%) 182 (29%) 1.31 0.92–1.86
  13–15 years 50 (20%) 97 (39%) 100 (40%) 1.0 (ref)
 Residence P = 0.318
  Farm 107 (26%) 136 (33%) 164 (40%) 1.75 1.17–2.64
  Country/not a farm 33 (26%) 51 (40%) 44 (34%) 1.51 0.9–2.51
  Town 35 (20%) 67 (38%) 73 (42%) 1.0 (ref)
 Race P = 0.370
  White/Caucasian 245 (36%) 267 (39%) 171 (25%) 1.0 (ref)
  Other races 9 (31%) 15 (52%) 5 (17%) 0.69 0.27–1.78
 Unlocked handgunsc P < 0.001
  Yes 121 (38%) 89 (28%) 110 (34%) Not in the Analyses
  No 49 (13%) 157 (42%) 168 (45%)
a

Those who answered “Unsure” regarding firearm storage were not included in that analysis.

b

The sum of n for a variable may not equal the total Group N due to missing values.

c

Firearms stored at least sometimes unlocked.