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Table 5 Distribution of survey-time costs by type of incentive used and survey pricing mechanism, reported in USD

From: A cost study for mobile phone health surveys using interactive voice response for assessing risk factors of noncommunicable diseases

Country Incentive per completed survey Lottery incentive per completed survey
Survey pricing per min Survey pricing via flat fee# Survey pricing per min Survey pricing via flat fee#
Bangladesh 116,387 89,647 93,787 89,647
Colombia+ 28,080 NA NA NA
Uganda 25,444 34,630 25,984 34,630
  1. +Variable costs in Colombia do not change based on survey pricing mechanism as only price per minute was made. Incentives based in lottery were not used in Colombia
  2. #Survey pricing via flat fee has the same survey-time costs for either type of incentive as the cost incurred for survey time by the payer would only be based on completed surveys