Author, Year
Country
Study design
Sample size (N)
Diabetes/Non-diabetes
Age
Comorbidities/ Complications
Symptoms
Mortality, Alive/recovered
Resource utilization
Zhang, 2020
China
Retrospective Cohort Study
258
63/195
Median (IQR): 64 (56-70)
Hypertension, Cardiovascular disease (CVD), Cerebrovascular disease, Chronic obstructive pulmonary disease(COPD), Chronic kidney disease(CKD), Chronic liver disease(CLD), Cancer/Malignancies, Acute cardiac injury(ACI), Acute respiratory distress syndrome(ARDS), Acute kidney injury(AKI)
Fever, Cough, Fatigue, Diarrhoea, Myalgia, Nausea, Vomiting, Polypnea, Expectoration, Headache
Mortality
Mechanical ventilation, Discharge from hospital
Zhang, 2020a China Retrospective observational study 145 61/84 Mean: 62.7 Hypertension, CVD, Cerebrovascular disease, COPD, CKD, Thyroid Cancer/Malignancies, Digestive system disease Fever, Cough, Fatigue, Diarrhoea, Nausea, Vomiting, Expectoration, Chest Pain, Headache, Anorexia, Dyspnoea, Sore throat, Palpitation Mortality Length of stay(LOS) (days), Mechanical ventilation, Hospitalization, Discharge from hospital, Intensive care unit  (ICU)
Xu, 2020 China Observational study 364 114/250 Mean (IQR): 65 (55-73) - - Mortality -
Shang, 2020
China
Retrospective cohort study
584
84/500
-
Hypertension, CVD, ARDS, COPD, CKD, CLD, Cancer/Malignancies, ACI, AKI,
Fever, Cough, Fatigue, Diarrhoea, Nausea, Vomiting, Myalgia, Expectoration, Chest Pain, Headache, Anorexia, Dyspnoea, Sore throat, Palpitation
Mortality, Alive/recovered
Mechanical ventilation, ICU
Chung, 2020 China Retrospective cohort study 110 29/81 Mean: 56.9 Hypertension, CVD, Cerebrovascular Disease, COPD, Cancer/Malignancies Fever, Cough, Diarrhoea, Myalgia, Headache, Dyspnoea, Sputum - ICU
Alkundi, 2020 England Retrospective cross-sectional study 232 87/145 Mean: 71.4 Hypertension, CVD, COPD, Cancer/Malignancies - Mortality, Alive/recovered -
Chen, 2020 China Clinical characteristics and outcomes of patients With diabetes and COVID-19 in association with glucose- lowering medication 904 49/292 - Hypertension, CVD, Cerebrovascular Disease, COPD, CKD, Cancer/Malignancies Fever, Cough, Fatigue Mortality LOS (days)
Yan, 2020 China retrospective, observational study 193 48/145 Mean (IQR): 64 (49-73) Hypertension, CVD, Cerebrovascular Disease, COPD, CKD, CLD, Fever, Cough, Fatigue, Diarrhoea, Nausea, Vomiting, Headache, Anorexia, Dyspnoea Mortality LOS (days), Mechanical ventilation, ICU
Bode, 2020 USA Retrospective observational study 1122 451/671 Median (IQR): 65 (24-95) - - Mortality, Alive/recovered LOS (days)
Wang, 2020 China Retrospective study 132 47/85 Median (IQR): 60 (56-72) Hypertension, CVD, Cerebrovascular Disease, COPD, CKD, Thyroid Fever, Fatigue, Diarrhoea, Myalgia, Shortness of breathing Mortality, Alive/recovered Time from onset to admission (days)
Zhang, 2020b China Retrospective cohort study 312 84/166 Median (IQR): 57 (38-66) Hypertension, CVD, Cerebrovascular Disease, COPD, CKD, CLD, Cancer/Malignancies, ACI, ADRS, AKI, Septic Shock Fever, Cough, Fatigue, Diarrhoea, Nausea or Vomiting, Myalgia, Polypnea, Headache, Dyspnoea, Palpitation, Sputum, Shortness of breathing - Mechanical ventilation
Chen, 2020a China Retrospective study 208 96/112 Median (IQR): 64 (55-69) Hypertension, CVD, Cerebrovascular Disease, COPD, CKD, Cancer/Malignancies, AKI, Septic Shock, ARDS, Fever, Cough, Fatigue, Diarrhoea, Nausea or Vomiting, Myalgia, Sore throat, Shortness of breathing, Headache, Sputum Mortality Mechanical ventilation, Hospitalization time (days), Hospitalization, Discharge from hospital,
Li, 2020 China Retrospective study 199 76/123 Median (IQR): 63 (50-75) - Fever, Cough, Anorexia, Fatigue, Dyspnoea, Diarrhoea, Nausea, Vomiting, Headache Mortality, Alive/recovered LOS (days), ICU
Liu, 2020 China Retrospective study 934 139/795 Mean: 64.5 CVD, Cerebrovascular Disease, COPD, Digestive System Disorder, Cancer/Malignancies’ Fever Mortality -