variables: 414003

This table contains all the variables of all the datasets we have at Our World In Data. Note that this includes only the information about the variables like name and default display settings, not the data itself.

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id name unit description createdAt updatedAt code coverage timespan datasetId sourceId shortUnit display columnOrder originalMetadata grapherConfigAdmin shortName catalogPath dimensions schemaVersion processingLevel processingLog titlePublic titleVariant attributionShort attribution descriptionShort descriptionFromProducer descriptionKey descriptionProcessing licenses license grapherConfigETL type sort dataChecksum metadataChecksum
414003 Total (estimated) polio cases   Since the number of reported cases of paralytic polio can be an underestimate of the number of actual cases, Tebbens et al. (2010) introduced a method to adjust for under-detection. (see: Duintjer Tebbens, R. J., Pallansch, M. A., Cochi, S. L., Wassilak, S. G. F., Linkins, J., Sutter, R. W., Aylward, R. B., & Thompson, K. M. (2010). Economic analysis of the global polio eradication initiative. Vaccine, 29(2), 334–343. https://doi.org/10.1016/j.vaccine.2010.10.026) This method uses two of the indicators above (non-polio AFP rate and % adequate stool collection) to derive a 'correction factor'. The number of reported cases is multiplied by this correction factor to estimate the number of actual cases. From the time when WHO surveillance data was available until the year 1996, they applied a correction factor of 7 for all countries. After this, they applied a correction factor of 7 when a country reported a non-polio AFP rate <1 or a % adequate stool collection <60%. They applied a correction factor of 2 when a country reported a non-polio AFP rate <2 or a % adequate stool collection <80%. Otherwise, they applied a correction factor of 1.11. They also made two exceptions in footnote (a) of Table 1, justifying their use of a correction factor of 1.11 for China from 1989–1992 and Oman in 1988 because they had large active investigations into outbreaks. In their paper, they estimated cases from 1980–2009 for countries that received GPEI support. Here we apply this method to all countries that reported data to the WHO from 1980–2020. As surveillance data from the WHO is only available from 2000 onwards, we apply a correction factor of 7 for all countries until 2000 (excluding China and Oman during the periods when their reported cases were multiplied by 1.11 in Tebbens et al. 2010). 2022-04-05 15:09:16 2023-06-15 05:05:42       5573 21964   
{
    "name": "Estimated polio cases",
    "includeInTable": true,
    "numDecimalPlaces": 0
}
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