For example, if an assessor believes that the specific responses on a given item may have negative organizational consequences, the assessor may have an incentive to record a response that would change the likelihood of those consequences occurring.
As a response incentive, one randomly selected participant received a $500 lottery prize.
In 2002, two years after the subjects' procedures, the research team sent a letter inviting patients to participate, along with a book of ten postage stamps as a response incentive.
Nationally, only about 3percentt of hotel guests turn in the cards, said a spokeswoman for PricewaterhouseCoopers, the accounting firm; if there is an incentive, the response is 15 to 20percentt, she said.
A large community mailing to determine the prevalence of Irritable Bowel Syndrome (IBS) [ 20] provided an opportunity to embed a randomised controlled trial to investigate the effect of including an incentive on response and completion rates.
This study aimed to determine the effect of including a lottery-style incentive on response rates to a postal health survey.
Again based in England, Roberts et al. (2004) [ 23] in an RCT to evaluate the effect of including a lottery incentive on response rate found that the offer of entry into a lottery style draw for £100 of high street vouchers had no effect on the return rates of postal questionnaires amongst respondents aged 18 years and over (lottery and no incentive conditions both resulted in a 62% response rate).
One of the main reasons why such a strategy of an unconditional incentive improves response rates relates to trust in the context of social exchange theory.
That's a response to a market incentive, market incentives work in health care.
Furthermore, the most effective strategy, if funds allow, is a monetary incentive, as response rates can be more than doubled when payment is offered [ 49].
