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StatsToDo: Squential Analaysis for Unpaired Counts (Whitehead)

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MacroPlot Resources
Explanations Example Javascript Program

Calculations for Sequential Analysis for Two Unpaired Counts

Data
Data is in 4 columns
  - Rows represent data from consecutive observations
  - Col 1 = number of subjects in group 1 (n1)
  - Col 2 = number of events (counts) in group 1 (k1)
  - Col 3 = number of subjects in group 2 (n2)
  - Col 4 = number of events (counts) in group 2 (k2)
Probability of Type I Error (α) (one tail)
Power (1 - β)
Expected Mean Count in group 1 (λ1)
Expected Mean Count in group 2 (λ2)
Expected Ratio of Sample Size in the 2 Groups(ratio=n1/n2)
MacroPlot Code