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Prevalence of Missing Values and Protest Zeros in Contingent Valuation in Dental Medicine
Background: The number of contingent valuation (CV) studies in dental medicine using willingness-to-pay (WTP) methodology has substantially increased in recent years. Missing values due to absent information (i.e., missingness) or false information (i.e., protest zeros) are a common problem in WTP s...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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MDPI
2021
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307611/ https://www.ncbi.nlm.nih.gov/pubmed/34299670 http://dx.doi.org/10.3390/ijerph18147219 |