Author: Guosheng Yin; Huaqing Jin
Title: Comparison of transmissibility of coronavirus between symptomatic and asymptomatic patients: Reanalysis of the Ningbo Covid-19 data Document date: 2020_4_7
ID: nlzdto1h_7
Snippet: However, in their original statistical analysis 1 , the chi-squared tests were unduly used because the counts in some cells of the contingency tables are rather small and even zeros, which violates the assumptions of a chi-squared test and thus casts doubt on the validity of the hypothesis test. Moreover, when comparing the transmission rates of symptomatic and asymptomatic cases, Chen et al 4 included the cases associated with a super-spreader w.....
Document: However, in their original statistical analysis 1 , the chi-squared tests were unduly used because the counts in some cells of the contingency tables are rather small and even zeros, which violates the assumptions of a chi-squared test and thus casts doubt on the validity of the hypothesis test. Moreover, when comparing the transmission rates of symptomatic and asymptomatic cases, Chen et al 4 included the cases associated with a super-spreader who mainly transmitted the disease in an air-conditioned bus and a buddhism activity gathering. However, this may reduce the generalization of the findings as the super-spreader should be regarded as an outlier and removed from the primary analysis.
Search related documents:
Co phrase search for related documents- chi squared test and contingency table: 1, 2
- chi squared test and hypothesis test: 1, 2, 3
- contingency table and hypothesis test: 1, 2, 3
Co phrase search for related documents, hyperlinks ordered by date