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Table 6 Bivariate regression analysis, using Group 1 as the reference group in the dummy variable

From: Internet-based Self-Assessment after the Tsunami: lessons learned

   OR P 95% CI
Suicidal ideation
Reference group: Group 1
Group 1 versus Group 2 0.9 0.68 0.6-1.4
  Group 1 versus Group 3 1.0 0.92 0.6-1.7
  Group 1 versus Group 4 1.1 0.66 0.7-1.7
  Group 1 versus Group 5 0.9 0.47 0.6-1.3
Re-experience/Thoughts of the event
Reference group: Group 1
Group 1 versus Group 2 0.7 0.06 0.5-1.0
  Group 1 versus Group 3 0.3 0.00 0.2-0.5
  Group 1 versus Group 4 0.2 0.00 0.1-0.3
  Group 1 versus Group 5 0.1 0.00 0.0-0.1
  1. OR: odds ratio
  2. CI: confidence interval