Table 3 Weighted counts and proportions (%) for (a) all exposed occupants (injured and uninjured) and (b) all injured occupants (occupants with cervical spine injuries) separated by their exposure to a rollover or non-rollover crash. Separate analyses are tabulated for cases where sex, seatbelt use, ejection status and fatality information was known. Abbreviations: R = rollover, NR = non-rollover, N = weighted counts, Nall = total weighted counts for each condition. The percentages for the rollover (R/N) and non-rollover (NR/N) conditions for each row sum to 100%, whereas the total column percentages (N/Nall) for each group sum to 100%
From: Cervical vertebral and spinal cord injuries in rollover occupants
a) All Exposed Occupants | Â | Â | Â | Â | Â | Â |
| Â | Rollover | Â | Non-Rollover | Â | Total | Â |
Group | R | R/N | NR | NR/N | N | N/Nall |
Sex | Â | Â | Â | Â | Â | Â |
 Female | 641,371 | 5.6% | 10,769,883 | 94.4% | 11,411,253 | 49.2% |
 Male | 1,043,477 | 8.9% | 10,746,176 | 91.1% | 11,789,653 | 50.8% |
 Total | 1,684,848 | 7.3% | 21,516,059 | 92.7% | 23,200,906 | 100.0% |
Seat belt use | Â | Â | Â | Â | Â | Â |
 Belted | 1,327,539 | 6.8% | 18,210,771 | 93.2% | 19,538,310 | 91.6% |
 Unbelted | 253,601 | 14.1% | 1,545,673 | 85.9% | 1,799,274 | 8.4% |
 Total | 1,581,140 | 7.4% | 19,756,444 | 92.6% | 21,337,584 | 100.0% |
Ejection | Â | Â | Â | Â | Â | Â |
 Ejected | 88,119 | 67.5% | 42,521 | 32.5% | 130,640 | 0.6% |
 Not Ejected | 1,591,485 | 6.9% | 21,448,651 | 93.1% | 23,040,136 | 99.4% |
 Total | 1,679,604 | 7.2% | 21,491,172 | 92.8% | 23,170,776 | 100.0% |
Fatality | Â | Â | Â | Â | Â | Â |
 Fatal | 31,687 | 29.6% | 75,258 | 70.4% | 106,945 | 0.5% |
 Not Fatal | 1,653,172 | 7.2% | 21,444,711 | 92.8% | 23,097,883 | 99.5% |
 Total | 1,684,859 | 7.3% | 21,519,969 | 92.7% | 23,204,828 | 100.0% |
b) Injured Occupants Only | Â | Â | Â | Â | Â | Â |
| Â | Rollover | Â | Non-Rollover | Â | Total | Â |
Group | R | R/N | NR | NR/N | N | N/Nall |
Sex | Â | Â | Â | Â | Â | Â |
 Female | 12,727 | 24.2% | 39,893 | 75.8% | 52,620 | 47.4% |
 Male | 18,509 | 31.7% | 39,911 | 68.3% | 58,420 | 52.6% |
 Total | 31,236 | 28.1% | 79,804 | 71.9% | 111,040 | 100.0% |
Seat belt use | Â | Â | Â | Â | Â | Â |
 Belted | 12,619 | 21.8% | 45,243 | 78.2% | 57,863 | 65.2% |
 Unbelted | 13,499 | 43.7% | 17,421 | 56.3% | 30,920 | 34.8% |
 Total | 26,118 | 29.4% | 62,664 | 70.6% | 88,783 | 100.0% |
Ejection | Â | Â | Â | Â | Â | Â |
 Ejected | 9,963 | 57.6% | 7,338 | 42.4% | 17,300 | 15.7% |
 Not Ejected | 21,078 | 22.6% | 72,139 | 77.4% | 93,218 | 84.3% |
 Total | 31,041 | 28.1% | 79,477 | 71.9% | 110,518 | 100.0% |
Fatality | Â | Â | Â | Â | Â | Â |
 Fatal | 5,724 | 22.6% | 19,597 | 77.4% | 25,321 | 22.8% |
 Not Fatal | 25,512 | 29.8% | 60,207 | 70.2% | 85,719 | 77.2% |
 Total | 31,236 | 28.1% | 79,804 | 71.9% | 111,040 | 100.0% |