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Table 4 Adjusted odds ratios (aOR) and 95% Confidence Intervals (CI) from multinomial logistic regression models for the associations between injury circumstances, demographic characteristics, eligibility groups, and World Trade Center (WTC) exposures and injury severity, Health and Quality of Life 15 Years after 9/11 Study

From: Conducting a study to assess the long-term impacts of injury after 9/11: participation, recall, and description

  Severity comparison
Medium vs. Low High vs. Low
Characteristic aORa (95% CI) aORa (95% CI)
How injury occurred (among injured)b
 Hit by a falling object 0.65 (0.24, 1.74) 1.84 (0.70, 4.84)
 Trip and fell 1.00 (Reference) 1.00 (Reference)
 Hit head on object 0.33 (0.15, 0.72) 0.40 (0.17, 0.90)
 Came into contact with something hot 1.12 (0.47, 2.69) 1.01 (0.41, 2.52)
 Descending down stairs 1.00 (0.51, 1.95) 1.07 (0.54, 2.13)
 Trapped, buried, or crushed 1.67 (0.45, 6.19) 1.80 (0.47, 6.87)
 Covered by dust/debris/ash/asbestos 0.29 (0.05, 1.81) 1.08 (0.20, 5.87)
 Unknown or unsure 0.17 (0.08, 0.34) 0.15 (0.07, 0.32)
Age at 9/11 (years)
 16–34 1.00 (Reference) 1.00 (Reference)
 35–49 0.75 (0.39, 1.42) 0.71 (0.37, 1.37)
  ≥ 50 0.56 (0.28, 1.14) 0.70 (0.34, 1.44)
Sex
 Men 1.00 (Reference) 1.00 (Reference)
 Women 1.66 (0.97, 2.86) 1.24 (0.71, 2.17)
Race/ Ethnicity
 White 1.00 (Reference) 1.00 (Reference)
 Black 1.09 (0.50, 2.35) 1.23 (0.55, 2.74)
 Latino 0.80 (0.42, 1.52) 0.85 (0.44, 1.67)
 Asianc 3.48 (0.79, 15.25) 3.45 (0.77, 15.51)
 Other racec 3.48 (0.79, 15.25) 3.45 (0.77, 15.51)
Employed on 9/11
 No 1.00 (Reference) 1.00 (Reference)
 Yes 1.44 (0.41, 5.09) 0.85 (0.23, 3.18)
Eligibility group
 Rescue and recovery worker 1.44 (0.57, 3.65) 3.30 (1.22, 8.94)
  Date of arrival: 9/11/01d 0.32 (0.04, 2.65) 0.23 (0.03, 1.87)
  Date of arrival: 9/12/01 0.34 (0.03, 3.92) 0.22 (0.02, 2.55)
  Date of arrival: 9/13/01–9/17/01 0.14 (0.01, 1.34) 0.11 (0.01, 1.11)
  Date of arrival: 9/18/01 and later 1.00 (Reference) 1.00 (Reference)
  Total number of days worked: 1–7 daysd 1.00 (Reference) 1.00(Reference)
  Total number of days worked: 7.5–30 days 0.90 (0.37, 2.17) 0.84 (0.35, 1.99)
  Total number of days worked: 30.5–90 days 1.38 (0.53, 3.56) 0.95 (0.37, 2.47)
  Total number of days worked: ≥90.5 days 1.07 (0.42, 2.74) 0.78 (0.31, 1.99)
 Lower Manhattan resident 1.00 (Reference) 1.00 (Reference)
 Lower Manhattan area worker/passerby 1.78 (0.73, 4.33) 3.43 (1.31, 8.97)
WTC exposure score   
 None/lowe 1.00 (Reference) 1.00 (Reference)
 Mediume 1.00 (Reference) 1.00 (Reference)
 High 1.94 (1.18, 3.17) 3.04 (1.81, 5.11)
 Very high 4.05 (2.02, 8.11) 8.07 (3.95, 16.49)
  1. a Model controls for all factors listed in table, except for date of arrival and total number of days worked at the WTC site which applies to just rescue and recovery workers. A separate model was fit among rescue and recovery workers only that included these covariates as well. See footnote (d)
  2. b Participants were asked specifically about their most serious injury received on 9/11
  3. c Asian and other race were collapsed in the multinomial models due to small cell sizes
  4. d Among rescue/recovery workers, date of arrival and number of days worked refer to rescue and recovery work at the World Trade Center site. Corresponding odds ratios were generated from a separate model among rescue and recovery workers only
  5. e None/low and medium categories were collapsed in the multinomial models due to small cell sizes