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Table 2 Demographics, World Trade Center (WTC) exposures, and injury and health history by consistency on injury status between World Trade Center Health Registry Wave 1 and the Health and Quality of Life 15 Years after 9/11 Study, stratified by injury status at Wave 1

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

  Injured at Wave 1 Not injured at Wave 1
Consistent (N = 1003, 50.4%) Discrepant (N = 986, 49.6%)   Consistent (N = 1818, 92.7%) Discrepant (N = 144, 7.3%)  
N (%) N (%) aRRa,b (95% CI) N (%) N (%) aRRa,c (95% CI)
Age at time of study invitation (years)
 31–49 181 (46.1) 212 (53.9) 1.00 (Reference) 479 (95.0) 25 (5.0) 1.00 (Reference)
 50–59 380 (53.9) 325 (46.1) 0.94 (0.85, 1.05) 529 (92.6) 42 (7.4) 1.24 (0.73, 2.10)
 60–69 333 (50.5) 327 (49.5) 0.95 (0.84, 1.07) 568 (91.0) 56 (9.0) 1.46 (0.84, 2.55)
 70–94 109 (47.2) 122 (52.8) 1.02 (0.87, 1.21) 242 (92.0) 21 (8.0) 2.15 (1.07, 4.34)
Sex
 Men 614 (51.0) 591 (49.0) 1.00 (Reference) 975 (92.2) 83 (7.8) 1.00 (Reference)
 Women 389 (49.6) 395 (50.4) 1.03 (0.94, 1.13) 843 (93.3) 61 (6.7) 0.70 (0.47, 1.04)
Race/ Ethnicity
 White 715 (50.0) 715 (50.0) 1.00 (Reference) 1386 (93.6) 95 (6.4) 1.00 (Reference)
 Black 112 (51.9) 104 (48.1) 0.96 (0.83, 1.11) 155 (89.6) 18 (10.4) 1.38 (0.81, 2.33)
 Latino 117 (54.2) 99 (45.8) 0.94 (0.82, 1.09) 150 (87.7) 21 (12.3) 1.15 (0.67, 1.98)
 Asian 31 (44.9) 38 (55.1) 1.11 (0.91, 1.37) 78 (90.7) 8 (9.3) 1.70 (0.83, 3.47)
 Other race 28 (48.3) 30 (51.7) 1.03 (0.79, 1.34) 49 (96.1) 2 (3.9) 0.58 (0.15, 2.21)
Education at Wave 4
  ≤ High school/ GED 137 (53.7) 118 (46.3) 1.00 (Reference) 150 (89.8) 17 (10.2) 1.00 (Reference)
 Some college 365 (51.1) 349 (48.9) 1.03 (0.89, 1.18) 340 (88.3) 45 (11.7) 1.77 (0.89, 3.50)
 College 294 (51.5) 277 (48.5) 0.98 (0.85, 1.13) 641 (93.4) 45 (6.6) 1.47 (0.73, 2.97)
 Graduate degree 198 (45.9) 233 (54.1) 1.05 (0.90, 1.21) 675 (95.1) 35 (4.9) 1.49 (0.72, 3.09)
Marital Status at Wave 4
 Married/cohabitating 624 (47.6) 686 (52.4) 1.00 (Reference) 1285 (93.8) 85 (6.2) 1.00 (Reference)
 Divorced 182 (61.3) 115 (38.7) 0.76 (0.65, 0.89) 178 (87.3) 26 (12.7) 1.63 (1.03, 2.56)
 Widowed 50 (54.3) 42 (45.7) 0.90 (0.73, 1.11) 56 (91.8) 5 (8.2) 1.00 (0.41, 2.42)
 Never married 128 (49.4) 131 (50.6) 0.98 (0.87, 1.10) 291 (92.4) 24 (7.6) 1.14 (0.69, 1.90)
Income at Wave 4
  ≤ $50,000 250 (61.4) 157 (38.6) 1.00 (Reference) 239 (87.9) 33 (12.1) 1.00 (Reference)
 $50,000–$150,000 453 (47.6) 499 (52.4) 1.02 (0.89, 1.17) 842 (91.8) 75 (8.2) 0.88 (0.56, 1.39)
  ≥ $150,000 236 (46.9) 267 (53.1) 0.93 (0.79, 1.10) 647 (96.3) 25 (3.7) 0.60 (0.32, 1.13)
Employment status at Wave 4
 Employed 492 (45.5) 589 (54.5) 1.00 (Reference) 1202 (94.1) 76 (5.9) 1.00 (Reference)
 Retired 282 (50.2) 280 (49.8) 0.90 (0.80, 1.01) 436 (90.8) 44 (9.2) 1.04 (0.65, 1.66)
 Student/Homemaker 6 (40.0) 9 (60.0) 1.02 (0.89, 1.16) 43 (93.5) 3 (6.5) 2.05 (0.52, 8.06)
 Unemployed due to health reasons 168 (77.1) 50 (22.9) 0.54 (0.41, 0.71) 51 (78.5) 14 (21.5) 1.29 (0.73, 2.28)
 Unemployed due to other reasons 31 (42.5) 42 (57.5) 1.15 (0.98, 1.36) 64 (94.1) 4 (5.9) 0.81 (0.31, 2.10)
Eligibility group
 Rescue and recovery worker 423 (51.3) 401 (48.7) 1.00 (Reference) 241 (89.3) 29 (10.7) 1.00 (Reference)
 Lower Manhattan resident 66 (51.2) 63 (48.8) 1.00 (0.84, 1.21) 252 (95.1) 13 (4.9) 0.46 (0.22, 0.97)
 Lower Manhattan area worker/passerby 514 (49.6) 522 (50.4) 0.92 (0.84, 1.01) 1325 (92.9) 102 (7.1) 0.79 (0.51, 1.23)
WTC exposure score
 None/low 25 (24.3) 78 (75.7) 1.00 (Reference) 537 (95.0) 28 (5.0) 1.00 (Reference)
 Medium 228 (37.9) 373 (62.1) 0.87 (0.78, 0.97) 896 (94.1) 56 (5.9) 1.15 (0.70, 1.89)
 High 491 (52.2) 449 (47.8) 0.77 (0.69, 0.87) 355 (87.2) 52 (12.8) 1.80 (1.08, 3.02)
 Very high 259 (75.1) 86 (24.9) 0.47 (0.38, 0.59) 30 (78.9) 8 (21.1) 2.58 (1.13, 5.88)
Ever-PTSDd
 No 314 (38.2) 508 (61.8) 1.00 (Reference) 1357 (96.1) 55 (3.9) 1.00 (Reference)
 Yes 641 (61.0) 410 (39.0) 0.79 (0.72, 0.87) 354 (82.5) 75 (17.5) 3.32 (2.25, 4.90)
Types of injuries specified at Wave 1
 Cut 618 (56.5) 476 (43.5) 0.81 (0.75, 0.88)    
 Broken bone 102 (87.9) 14 (12.1) 0.33 (0.19, 0.57)    
 Burn 149 (64.5) 82 (35.5) 0.76 (0.64, 0.90)    
 Concussion 81 (94.2) 5 (5.8) 0.22 (0.09, 0.50)    
 Sprain 581 (50.3) 575 (49.7) 1.00 (Reference)    
Injury typee count as measured at Wave 1
 1 624 (42.7) 836 (57.3) 1.00 (Reference)    
 2f 270 (66.2) 138 (33.8) 0.60 (0.51, 0.69)    
 3 75 (89.3) 9 (10.7)     
 4 28 (93.3) 2 (6.7)     
 5 6 (85.7) 1 (14.3)     
  1. aRisk ratio models the outcome as being discordant on injury status
  2. bModel fit among those who specified they were injured at Wave 1 includes all covariates listed in this column
  3. cModel fit among those who specified they were not injured at Wave 1 includes all covariates listed in this column
  4. dEver had a PCL score ≥ 44 on Wave 1, Wave 2, Wave 3, and/or Wave 4
  5. eCount of the following injury types: cut, broken bone, burn, concussion, sprain
  6. fRisk ratio represents comparison between those who had two or more injuries versus those who had just one