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Table 1 Characteristics of cases and controls and their indexa handgun purchase, 1996–2015

From: Handgun purchasing characteristics and firearm suicide risk: a nested case–control study

  Purchasers aged 21–25 in 1996 Purchasers aged 50–54 in 1996
Cases Controls Cases Controls
Total, n (%) 390 (100) 1594 (100) 512 (100) 2288 (100)
Characteristics of purchasers
Age at first purchaseb in years, median (IQR) 27.6 (24.8, 32.2) 25.9 (23.9, 29.5) 56.0 (53.1, 60.8) 54.6 (52.5, 58.6)
Race/ethnicity, n (%)
 Asian 45 (11.5) 177 (11.1) 13 (2.5) 95 (4.2)
 Black/African American 22 (5.6) 94 (5.9) 14 (2.7) 87 (3.8)
 Hispanic/Latinx 65 (16.7) 345 (21.6) 16 (3.1) 120 (5.2)
 Otherc 11 (2.8) 60 (3.8) 16 (3.1) 78 (3.4)
 White 247 (63.3) 918 (57.6) 453 (88.5) 1908 (83.4)
Total number of study period purchases, median (IQR) 1.0 (1.0, 2.0) 1.0 (1.0, 2.0) 1.0 (1.0, 2.0) 1.0 (1.0, 2.0)
Characteristics of index purchasea
Gun show purchase, n (%)
 Yes 11 (2.8) 28 (1.8) 9 (1.8) 47 (2.1)
 No 379 (97.2) 1566 (98.2) 503 (98.2) 2241 (97.9)
Transaction type, n (%)
 Dealer’s record of sale 376 (96.4) 1539 (96.5) 483 (94.3) 2171 (94.9)
 Other 14 (3.6) 55 (3.5) 29 (5.7) 117 (5.1)
Handgun category, n (%)
 Revolver 91 (23.3) 247 (15.5) 196 (38.3) 750 (32.8)
 Semiautomatic 237 (60.8) 1128 (70.8) 251 (49.0) 1226 (53.6)
 Otherd 62 (15.9) 219 (13.7) 65 (12.7) 312 (13.6)
Handgun caliber, n (%)
 Small 29 (7.4) 153 (9.6) 88 (17.2) 450 (19.7)
 Medium 181 (46.4) 711 (44.6) 243 (47.5) 862 (37.7)
 Largee 180 (46.2) 730 (45.8) 181 (35.4) 976 (42.7)
Inexpensive handgunf, n (%)
 Yes 18 (4.6) 61 (3.8) 19 (3.7) 86 (3.8)
 No 372 (95.4) 1533 (96.2) 493 (96.3) 2202 (96.2)
Time between index purchase and prior purchase, n (%)
 Purchaser had only 1 purchase, or less than 2 years between index purchase and prior purchase 350 (89.7) 1415 (88.8) 464 (90.6) 2040 (89.2)
 2–4 years between index purchase and prior purchase 27 (6.9) 108 (6.8) 29 (5.7) 166 (7.3)
 5 + years between index purchase and prior purchase 13 (3.3) 71 (4.5) 19 (3.7) 82 (3.6)
Distance to dealer in meters
 Q1 78 (20.0) 336 (21.1) 116 (22.7) 441 (19.3)
 Q2 84 (21.5) 321 (20.1) 116 (22.7) 453 (19.8)
 Q3 84 (21.5) 308 (19.3) 104 (20.3) 456 (19.9)
 Q4 68 (17.4) 316 (19.8) 92 (18.0) 468 (20.5)
 Q5 76 (19.5) 313 (19.6) 84 (16.4) 470 (20.5)
  1. Q quintile
  2. aThe purchase closest in time to the case’s death
  3. bFirst purchase observed during the study period
  4. cIncludes American Indian, Pacific Islander, other (unspecified), and unknown
  5. dIncludes bolt action, derringer, single-shot, and missing
  6. eIncludes other and unknown caliber
  7. fProxied by manufacturers producing handguns in the bottom quantile of prices listed in the Blue Book of Gun Values