Table I.
Characteristics of World Trade Center Health Program Rescue and Recovery Worker Participants, 2002 – 2011 (n=28,918)
| Characteristic | N | Percent | Deaths (N) |
|---|---|---|---|
| Person-years of observation | 164,563 | 330 | |
| Age on 9/11/2001, years (mean ± SD) | 38.8 ± 8.8 | 330 | |
| Sex | |||
| Male | 24,632 | 85.2 | 299 |
| Female | 4,286 | 14.8 | 31 |
| Race/ethnicity | |||
| Non-Hispanic white | 18,317 | 63.3 | 229 |
| Non-Hispanic black | 3,065 | 10.6 | 39 |
| Hispanic | 6,171 | 21.3 | 49 |
| Other | 1,365 | 4.7 | 13 |
| Exposure index | |||
| Low | 4,041 | 14.7 | 45 |
| Intermediate | 17,728 | 64.3 | 212 |
| High | 4,908 | 17.8 | 56 |
| Very high | 903 | 3.3 | 9 |
| Dust cloud exposure/arrival time | |||
| No dust/late arrival (9/15 and later) | 6,530 | 23.5 | 93 |
| No dust/early arrival (9/11 – 9/14) | 8,479 | 30.5 | 103 |
| Some exposure to dust cloud | 2,069 | 7.4 | 17 |
| Significant exposure to dust cloud | 4,845 | 17.4 | 43 |
| Directly in dust cloud | 5,870 | 21.1 | 65 |
| Duration of work (days) | |||
| 1 – 16 | 6,857 | 24.3 | 76 |
| 17 – 51 | 6,884 | 24.4 | 78 |
| 52 – 111 | 7,111 | 25.2 | 72 |
| ≥112 | 7,360 | 26.1 | 98 |
| Location of work | |||
| Not on debris pile | 17,749 | 63.4 | 205 |
| On debris pile | 10,253 | 36.6 | 119 |
| Occupation pre-9/11/2001 | |||
| Protective services | 13,676 | 47.3 | 64 |
| Construction | 6,283 | 21.7 | 125 |
| Other | 8,959 | 31.0 | 141 |
| Year of program enrollment | |||
| 2002 – 2005 | 13,543 | 46.8 | 237 |
| 2006 – 2008 | 9,689 | 33.5 | 76 |
| 2009 – 2011 | 5,686 | 19.7 | 17 |
| Smoking at program enrollment | |||
| Never | 17,118 | 60.1 | 140 |
| Former | 6,974 | 24.5 | 96 |
| Current | 4,413 | 15.5 | 89 |
| BMI at program enrollment | |||
| Normal | 4,417 | 15.8 | 67 |
| Overweight | 12,025 | 42.9 | 116 |
| Obese | 11,587 | 41.3 | 130 |
| SSN submitted to NDI | |||
| No | 18,997 | 65.7 | 152 |
| Yes | 9,921 | 34.3 | 178 |
SD = standard deviation; BMI = body mass index; SSN = social security number; NDI = National Death Index