Accuracy of epidemiological inferences based on publicly available information: retrospective comparative analysis of line lists of human cases infected with influenza A(H7N9) in China

Table 1 Summary of epidemiological information collected in each line list

Information collected for each case	China CDC	HealthMap	Virginia Tech	Bloomberg	HKU SPH	FluTrackers
Age	×	×	×	×	×	×
Sex	×	×	×	×	×	×
Province	×	×	×	×	×	×
City	×	×	×			×
Date of illness onset	×	×	×	×	×	×
Date of hospital admission	×		×	×	×	×
Date of discharge	×			×	×
Date of death	×	×	×	×	×	×
Health status	discharged/mild/stable/severe/died	died	discharged/mild/stable/severe/died	discharged/died	mild/severe/died	discharged/mild/stable/severe/died
Dates of data updates/archives	Apr 5 - May 31	Apr 5 - May 31	Apr 22, 24, 25, 26, 29, May 1, 6, 7	Apr 5–11, 13–19, 22–26, 29, 30, May 2, 7	Apr 10–24, May 1, 6, 13, 20, 27	Apr 13, 15, 16, 18, 22, 23, 27, 28, 30, May 2, 6, 9, 17, 29, 31

China CDC, Chinese Center for Disease Control and Prevention; HKUSPH, The University of Hong Kong School of Public Health.

ISSN: 1741-7015