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Table 4 Linear regression analysis of the relationship between PM10 concentration and Visit Indexb

From: Spatial analysis between particulate matter and emergency room visits for conjunctivitis and keratitis

  Unadjusted Adjustedc
  Coefficient 95% CI Coefficient 95% CI
Conjunctivitis 0.040a 0.005–0.074 0.044a 0.001–0.088
Keratitis 0.089a 0.016–0.163 0.104a 0.010–0.198
  1. Abbreviations: CI confidence interval
  2. ap-value < 0.05
  3. bVisit Index – number of patients with conjuctivitis or keratitis / number of all patients × 1000
  4. cAdjusted for SO2, NO2, O3 and CO