Krieger 2021.

Study characteristics
Notes	English title Emergency department characteristics and associations with intensive care admission among patients with coronavirus disease 2019 Study setting Start of study recruitment (MM/YYYY) 03/2020 End of study recruitment (MM/YYYY) 06/2020 Study design retrospective cohort Study centre(s) multiple centres/clinics/areas within a country Number of centres/clinics/areas 3 Study setting inpatient Number of participants recruited 330 Sampling method unspecified Participants Female participants (absolute number), 118 Age measure, value median (interquartile range), 65 (53, 76) Inclusion criteria Patients were included in the study if they presented to an ED and had laboratory‐confirmed severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) infection during the study period. Exclusion criteria Missing data were excluded from the analyses. Smoking NR Diabetes (unspecified) Hypertension (unspecified) Cardiovascular diseases (unspecified) Please indicate if additional information is available  NR Asthma (unspecified) Chronic obstructive pulmonary disease (unspecified) Other pulmonary diseases (unspecified) Please indicate if additional information is available  NR Immunosuppression (unspecified) Please indicate if additional information is available NR Chronic kidney disease (unspecified) Cancer (unspecified) Steroid administration (unspecified) Supplemental oxygen (absolute number) 40 Differential values for various oxygenation methods (if indicated) Nasal cannula (24), non‐rebreather mask (9), non‐invasive positive pressure ventilation (1), invasive mechanical ventilation (6) Other treatment NR Dose if applicable NR Duration if applicable NR Percentage received this treatment NR Prognostic factor(s) Study’s definition for obesity BMI > 29 The time when obesity has been measured unspecified Main variable used for determination of obesity BMI Threshold used for definition of obesity  29 Measure of frequency unspecified Frequency value NR How many eligible outcomes reported? 1 How many eligible outcomes reported? 1 Outcome(s) ICU admission Outcome (prognostic factor) ICU admission (obesity) Outcome ICU admission Prognostic factor (category):  Obesity Follow‐up Number of patients followed completely for this outcome  330 Number of obese patients followed completely for this outcome  NR Number of non‐obese patients followed completely for this outcome  NR Univariable (unadjusted) analysis for obesity Effect measure for obesity odds ratio  Effect measure value (95% CI) 1.01 (0.98, 1.04) Multivariable (adjusted) analysis for obesity Modelling method logistic regression The set of prognostic factors used for adjustment NR Effect measure for obesity NR Effect measure value (95% CI) 1.65 (1.04, 2.62)
Item	Authors' judgement	Support for judgement
Study Participation	Unclear	Appendix 3
Study Attrition ICU admission	Unclear	Appendix 3
Prognostic Factor Measurement	Yes	Appendix 3
Outcome Measurement ICU admission	Yes	Appendix 3
Confounding Bias ICU admission	No	Appendix 3
Statistical Analysis Bias	Yes	Appendix 3