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Table 4 Odds ratios (ORs) and 95% confidence intervals (CIs) for stratification of same-day respiratory causes of death

From: Mortality associated with wildfire smoke exposure in Washington state, 2006–2017: a case-crossover study

CategoryAdjusted OR (95% CI)N (%) with exposure variationa
All respiratory causes of death
 Age group
  0–41.52 (0.58, 3.97)22 (0.7)
  5–14
  15–440.91 (0.45, 1.84)43 (1.5)
  45–641.35 (1.09, 1.67)*417 (14.2)
  65–841.08 (0.96, 1.21)1518 (51.5)
  85+1.00 (0.86, 1.16)941 (32.0)
 Race
  White1.12 (1.02, 1.22)*2697 (91.6)
  Black0.96 (0.53, 1.72)62 (2.1)
  Native American0.88 (0.43, 1.82)42 (1.4)
  Hispanic0.42 (0.19, 0.95)*42 (1.4)
  Native Hawaiian/ Other Pacific Islander0.70 (0.20, 2.41)16 (0.5)
  Asian0.88 (0.52, 1.53)74 (2.5)
COPD causes of death
 Age group
  45–641.33 (1.00, 1.78)238 (13.7)
  65–841.14 (0.99, 1.31)1002 (57.9)
  85+1.04 (0.85, 1.28)481 (27.8)
  1. * p ≤ 0.05
  2. aPercent of cases, out of all cases whose strata have both wildfire smoke days and non-wildfire smoke days