Table 1 Overall characteristics of ATV crash victims and comparisons between victims from daytime and nighttime crashes as documented in the Iowa Statewide ORV Database

N (Row%)

3752

1501 (76%)

485 (24%)

Variable

n (Col%)^a

n (Col%)^a

n (Col%)^a

p value

 Male

2896 (78%)

1176 (79%)

371 (77%)

0.40

 Female

817 (22%)

308 (21%)

108 (21%)

 Youth (< 16)

961 (26%)

444 (30%)

66 (14%)

< 0.0001

 Adult

2716 (74%)

1020 (70%)

407 (86%)

 Operator

2156 (78%)

1039 (85%)

302 (78%)

0.002

 Passenger

421 (16%)

187 (15%)

85 (22%)

 Yes

413 (19%)

164 (18%)

32 (11%)

0.003

 No

1722 (81%)

732 (82%)

263 (89%)

 Positive

356 (21%)

100 (10%)

135 (39%)

< 0.0001

 Negative

1346 (79%)

857 (90%)

210 (61%)

 Not tested/unknown

1636

282

70

 Winter

352 (9%)

131 (9%)

57 (12%)

0.0012

 Spring

1010 (27%)

399 (27%)

103 (21%)

 Summer

1526 (41%)

653 (44%)

191 (39%)

 Fall

864 (23%)

318 (21%)

134 (28%)

 Weekday (Mon-Thu)

1291 (34%)

555 (37%)

118 (24%)

< 0.0001

 Weekend (Fri-Sat)

2461 (66%)

946 (63%)

367 (76%)

 Roadway

980 (35%)

554 (45%)

207 (53%)

0.007

 Off-road

1815 (65%)

678 (55%)

185 (47%)

 Paved

324 (42%)

218 (45%)

79 (44%)

0.72

 Unpaved

441 (58%)

264 (55%)

102 (56%)

 ATV-ATV collision

132 (4%)

57 (4%)

33 (8%)

< 0.0001

 ATV-MV collision

247 (8%)

186 (14%)

30 (7%)

 ATV-Object collision

461 (15%)

152 (12%)

70 (17%)

 Non-collision

2316 (73%)

896 (69%)

290 (69%)

 Yes

1086 (69%)

407 (62%)

137 (68%)

0.11

 No

480 (31%)

254 (38%)

65 (32%)

 Yes

499 (33%)

194 (24%)

45 (17%)

0.024

 No

1033 (67%)

628 (76%)

220 (83%)

 Yes

131 (4%)

69 (5%)

30 (6%)

0.16

 No

3608 (96%)

1423 (95%)

451 (94%)