Sidhu 2020.

Study characteristics
Notes	English title Abstract 15852: Body mass index and fatal outcome in patients hospitalized for Covid 19 Study setting Start of study recruitment (MM/YYYY) 02/2020 End of study recruitment (MM/YYYY) 05/2020 Study design retrospective cohort Study centre(s) single centres/clinics/areas within a country Number of centres/clinics/areas NR Study setting inpatient Number of participants recruited 419 Sampling method unspecified Participants Female participants (absolute number), 217 Age measure, value mean (standard deviation), 60.1 (15.5) Inclusion criteria NR Exclusion criteria NR Smoking NR Diabetes (absolute number), 174 Hypertension (absolute number), 237 Cardiovascular diseases (absolute number), 48 Please indicate if additional information is available  HF Asthma NR 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 (absolute number), 67 Cancer (absolute number), 47 Steroid administration (unspecified) Supplemental oxygen (unspecified) Differential values for various oxygenation methods (if indicated) NR 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 > 40 The time when obesity has been measured before disease or right at presentation Main variable used for determination of obesity BMI Threshold used for definition of obesity  40 Measure of frequency absolute number Frequency value 73 How many eligible outcomes reported? 2 How many eligible outcomes reported? 2 Outcome(s) mortality, ICU admission Outcome (prognostic factor) mortality (BMI > 40) Outcome mortality Prognostic factor (category):  BMI > 40 Follow‐up Number of patients followed completely for this outcome  419 Number of obese patients followed completely for this outcome  73 Number of non‐obese patients followed completely for this outcome  284 Univariable (unadjusted) analysis for obesity Effect measure for obesity NR Effect measure value (95% CI) NR Multivariable (adjusted) analysis for obesity Modelling method logistic regression The set of prognostic factors used for adjustment (BMI), hypertension, diabetes, hyperlipidaemia, and CKD Effect measure for obesity odds ratio  Effect measure value (95% CI) 3.9 (1.45, 10.5) Outcome (prognostic factor) ICU ad (BMI > 40) Outcome ICU ad Prognostic factor (category):  BMI > 40 Follow‐up Number of patients followed completely for this outcome  419 Number of obese patients followed completely for this outcome  73 Number of non‐obese patients followed completely for this outcome  284 Univariable (unadjusted) analysis for obesity Effect measure for obesity NR Effect measure value (95% CI) NR Multivariable (adjusted) analysis for obesity Modelling method logistic regression The set of prognostic factors used for adjustment (BMI), hypertension, diabetes, hyperlipidaemia, and CKD Effect measure for obesity odds ratio  Effect measure value (95% CI) 3.2 (1.1, 9)
Item	Authors' judgement	Support for judgement
Study Participation	Unclear	Appendix 3
Study Attrition Mortality	Yes	Appendix 3
Study Attrition ICU admission	Yes	Appendix 3
Prognostic Factor Measurement	Yes	Appendix 3
Outcome Measurement Mortality	Yes	Appendix 3
Outcome Measurement ICU admission	Unclear	Appendix 3
Confounding Bias Mortality	Yes	Appendix 3
Confounding Bias ICU admission	Yes	Appendix 3
Statistical Analysis Bias	Unclear	Appendix 3