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Table 3 Proportions of respondents reporting health changes by intensity of exposure

From: Health issues and healthcare utilization among adults who reported exposure to tear gas during 2020 Portland (OR) protests: a cross-sectional survey

Delayed health issues categories Participants reporting health issues
by intensity of exposure
Test of trend
1 day of exposure
N = 398
2–4 days of exposure
N = 1391
≥5 days of exposure
N = 468
n %a n %a n %a p value Z value
Any physical or psychological health issues 309 77.6 1215 87.3 420 89.7 < 0.01 − 3.8
Any physical health issuesa 290 72.9 1126 80.9 407 87 < 0.01 −4.7
 Eye 91 22.9 356 25.6 147 31.4 < 0.01 −3.0
 Nose 62 15.6 257 18.5 118 25.2 < 0.01 −3.8
 Mouth 59 14.8 232 16.7 87 18.6 0.16 −1.4
 Lungs and/or Chest 126 31.7 648 46.6 289 61.8 < 0.01 −8.3
 Skin 57 14.3 294 21.1 144 30.8 < 0.01 −5.8
 Gastrointestinal 77 19.3 358 25.7 203 43.4 < 0.01 −8.5
 Head 91 22.9 385 27.7 150 32.1 < 0.01 −2.8
 Menstrualb 116 39.7 566 54.8 217 66.6 < 0.01 −6.0
Psychological health issues 204 51.3 1041 74.8 390 83.3 < 0.01 −8.2
  1. a Total count for the delayed physical issues includes menstrual health/breast/chest health
  2. b Denominators for exposure of 1 day, 2–4 days, and ≥ 5 days were 292; 1032, 326, respectively, because of the eligibility criteria for this outcome (see Table 4 for details)