Biology Reference
In-Depth Information
BOX 1: HOW TO CALCULATE TIMELINESS—PEAK COMPARISON
1.
Construct a time series for each data source
a. Plot the frequency (number of cases) on the y-axis
b. Plot time on the x-axis. Time can be recorded by day, date, month, etc.
A
B
Time
2.
Identify the peak of each time series
A
B
Time
Peak A
Peak B
3.
Calculate the time difference between the peaks in each data source
a. Timeliness A = day (peak B) - day (peak A)
