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Table 2 Odds ratios from logistic regression analysis

From: Prehospital transportation to therapeutic hypothermia centers and survival from out-of-hospital cardiac arrest

  Odds ratioa 95 % Confidence intervala Odds ratiob 95 % Confidence intervalb
Treated at TH center 0.90 0.61, 1.31 1.70 1.19, 2.42
Year 2010 0.83 0.67, 1.03 0.81 0.61, 1.06
Witnessed arrest 1.44 1.17, 1.79 1.77 1.32, 2.38
Defibrillation by EMS 1.31 1.06, 1.62 1.54 1.16, 2.04
Shockable rhythm 1.15 0.82, 1.59 1.34 0.91, 1.97
Response time (dispatch to arrival on-scene)     
(reference: less than 4 minutes)
 4-8 minutes 0.98 0.73, 1.31 0.56 0.39, 0.79
 More than 8 minutes 0.88 0.65, 1.18 0.50 0.35, 0.70
Female sex (reference: male sex) 0.91 0.74, 1.13 0.89 0.66, 1.19
Age in years (reference: less than 50)     
 50-65 0.53 0.40, 0.70 0.61 0.43, 0.86
 66-80 0.52 0.37, 0.74 0.49 0.32, 0.76
 81 and above 0.41 0.28, 0.61 0.19 0.11, 0.34
Race/ethnicity (reference: White)     
 Black 0.92 0.69, 1.22 0.83 0.57, 1.21
 Hispanic 0.92 0.61, 1.39 0.77 0.43, 1.37
 Asian/Pacific Islander 1.31 0.77, 2.22 0.80 0.34, 1.90
 Other non-white 1.41 0.94, 2.13 1.24 0.74, 2.08
Expected primary payer (reference: Medicare)     
 Medicaid 1.37 0.83, 2.27 0.81 0.37, 1.75
 Private 1.30 0.97, 1.75 1.38 0.95, 2.01
 Self-pay/uninsured 0.89 0.62, 1.28 0.61 0.37, 1.00
 Other 1.09 0.54, 2.19 1.57 0.72, 3.41
Number of hospital beds (reference: less than 200)     
 200-399 2.19 1.24, 3.88 1.54 0.98, 2.41
 400 and above 2.83 1.33, 6.05 3.32 1.98, 5.59
  1. aDependent variable is neurologically intact survival to hospital discharge
  2. bDependent variable is 30-day neurologically intact survival