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Benefit Increase

INPUT TABLE
  Patients in the experimental group
  Patients in the control group
  Total number enrolled 1780
  Events in the experimental group
  Events among controls
  Experimental mean follow-up (months)
  Control mean follow-up (months)
 
 
OUTCOME MEASURE (EVENT)
GROUP Yes expected No expected Total
Experimental 120 105.00 770 785.00 1780
Control 90 105.00 800 785.00 1780
Total 210 210.00 1570 1,570.00 3560
Hypothesis testing (Chi-squared test)
  χ2= 4.286 =  
 
  Best
estimate
95% CI
  EEO (odd) 0.156   0.117   0.208
  CEO (odd) 0.113   0.084   0.150
  EER (rate) 0.067   0.057   0.080
  CER (rate) 0.051   0.041   0.062
  RRI 0.333   0.724   0.031
  ARI 0.017   0.001   0.032
  NNT (benefit) 59   31   741
       
  ODDS Ratio 1.385   1.036   1.853
  Risk Ratio 1.333   1.031   1.724
             
  NNT for 1 year 59   31   31
  NNT for 2 year 30   16   371