| This graph shows the percentage of remaining non-responders that completed the survey on a given day. On day 6, reminders were sent to non-responders. The total response rate on the second sendout is nearly as high as the response rate on the first day.
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| The second chart shows the percentage of the total population that responded on each day. The percentages responding on and after day 6 are higher than would be expected if the response rate had trailed off naturally.
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| The plateau seen from days 3 to 5 is typical of single-mailout surveys. The re-send was an inexpensive way to increase effectiveness.
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