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Abstract
There are different patterns in the COVID-19 outbreak in the general population and amongst nursing home patients. We investigate the time from symptom onset to diagnosis and hospitalization or the length of stay (LoS) in the hospital, and whether there are differences in the population. Sciensano collected information on 14,618 hospitalized patients with COVID-19 admissions from 114 Belgian hospitals between 14 March and 12 June 2020. The distributions of different event times for different patient groups are estimated accounting for interval censoring and right truncation of the time intervals. The time between symptom onset and hospitalization or diagnosis are similar, with median length between symptom onset and hospitalization ranging between 3 and 10.4 days, depending on the age of the patient (longest delay in age group 20-60 years) and whether or not the patient lives in a nursing home (additional 2 days for patients from nursing home). The median LoS in hospital varies between 3 and 10.4 days, with the LoS increasing with age. The hospital LoS for patients that recover is shorter for patients living in a nursing home, but the time to death is longer for these patients. Over the course of the first wave, the LoS has decreased.
Keywords
COVID-19, length of stay in hospital, symptom onset to hospitalization, truncation and interval-censoring

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MLA
Faes, Christel, et al. “Time between Symptom Onset, Hospitalisation and Recovery or Death : Statistical Analysis of Belgian COVID-19 Patients.” INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, vol. 17, no. 20, 2020, doi:10.3390/ijerph17207560.
APA
Faes, C., Abrams, S., Van Beckhoven, D., Meyfroidt, G., Vlieghe, E., Hens, N., … Van Praet, J. (2020). Time between symptom onset, hospitalisation and recovery or death : statistical analysis of Belgian COVID-19 patients. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 17(20). https://doi.org/10.3390/ijerph17207560
Chicago author-date
Faes, Christel, Steven Abrams, Dominique Van Beckhoven, Geert Meyfroidt, Erika Vlieghe, Niel Hens, [missing] Belgian Collaborative Group on COVID-19 Hospital Surveillance Belgian Collaborative Group on COVID-19 Hospital Surveillance, and Jens Van Praet. 2020. “Time between Symptom Onset, Hospitalisation and Recovery or Death : Statistical Analysis of Belgian COVID-19 Patients.” INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 17 (20). https://doi.org/10.3390/ijerph17207560.
Chicago author-date (all authors)
Faes, Christel, Steven Abrams, Dominique Van Beckhoven, Geert Meyfroidt, Erika Vlieghe, Niel Hens, [missing] Belgian Collaborative Group on COVID-19 Hospital Surveillance Belgian Collaborative Group on COVID-19 Hospital Surveillance, and Jens Van Praet. 2020. “Time between Symptom Onset, Hospitalisation and Recovery or Death : Statistical Analysis of Belgian COVID-19 Patients.” INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 17 (20). doi:10.3390/ijerph17207560.
Vancouver
1.
Faes C, Abrams S, Van Beckhoven D, Meyfroidt G, Vlieghe E, Hens N, et al. Time between symptom onset, hospitalisation and recovery or death : statistical analysis of Belgian COVID-19 patients. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH. 2020;17(20).
IEEE
[1]
C. Faes et al., “Time between symptom onset, hospitalisation and recovery or death : statistical analysis of Belgian COVID-19 patients,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, vol. 17, no. 20, 2020.
@article{8680303,
  abstract     = {There are different patterns in the COVID-19 outbreak in the general population and amongst nursing home patients. We investigate the time from symptom onset to diagnosis and hospitalization or the length of stay (LoS) in the hospital, and whether there are differences in the population. Sciensano collected information on 14,618 hospitalized patients with COVID-19 admissions from 114 Belgian hospitals between 14 March and 12 June 2020. The distributions of different event times for different patient groups are estimated accounting for interval censoring and right truncation of the time intervals. The time between symptom onset and hospitalization or diagnosis are similar, with median length between symptom onset and hospitalization ranging between 3 and 10.4 days, depending on the age of the patient (longest delay in age group 20-60 years) and whether or not the patient lives in a nursing home (additional 2 days for patients from nursing home). The median LoS in hospital varies between 3 and 10.4 days, with the LoS increasing with age. The hospital LoS for patients that recover is shorter for patients living in a nursing home, but the time to death is longer for these patients. Over the course of the first wave, the LoS has decreased.},
  articleno    = {7560},
  author       = {Faes, Christel and Abrams, Steven and Van Beckhoven, Dominique and Meyfroidt, Geert and Vlieghe, Erika and Hens, Niel and Belgian Collaborative Group on COVID-19 Hospital Surveillance Belgian Collaborative Group on COVID-19 Hospital Surveillance, [missing] and Van Praet, Jens},
  issn         = {1660-4601},
  journal      = {INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH},
  keywords     = {COVID-19,length of stay in hospital,symptom onset to hospitalization,truncation and interval-censoring},
  language     = {eng},
  number       = {20},
  pages        = {18},
  title        = {Time between symptom onset, hospitalisation and recovery or death : statistical analysis of Belgian COVID-19 patients},
  url          = {http://dx.doi.org/10.3390/ijerph17207560},
  volume       = {17},
  year         = {2020},
}

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