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Two tickets per postcard; possible nine-month wait.
Users pay 1.49 per postcard whether the purchase is made in sterling, dollars or euros, with ShoZu keeping 10%.
First, we would have wasted a lot of our funds had we just mailed out our survey at a cost of $1 per survey in comparison to 25 cents per postcard.
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Applied to our entire study, this would have represented a total of $170.63 savings accrued to the investigator, or about $0.87 per completion, postcard vs. letter.
Vine writes 15 new jokes per day on a postcard.
*total cost per survey included survey packet, incentive and reminder postcard **total cost per survey included survey packet only Table 4 displays the representativeness of respondents to the total ancillary study population.
10112; one postcard, two tickets per household.
Similarly, Pirotta et al. [ 38] found that sending a postcard added only AU$0.40 per respondent but increased the reponse by 6% from 60%to66%60%to66%
HippoPost allows users to send two free custom postcards per day, which are supported by user-selected advertising printed on the text portion of the post card.
Although the per-protocol analysis showed a strong benefit for the crisis postcard, the primary finding of the present study was that the crisis postcard intervention did not significantly reduce subsequent suicidal behaviour in the intention-to-treat analysis.
The ITT analysis showed no effect for the crisis postcard (hazard ratio = 0.84; 95% CI = 0.56 – 1.29), but the per-protocol analysis showed a strong benefit for the crisis postcard (hazard ratio = 0.39; 95% CI = 0.21 – 0.21).
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com