Table 1.

A summary of prevalence of obesity as well as co-morbidities in Covid-19 from review of the current literature.

First Author	City/Country	No of subjects	Obesity (%)	Adverse clinical outcomes in obese
Goyal P et al. [12]	New York City	393	35.8	Majority needed invasive mechanical ventilation
Petrilli CM et al. [13]	New York City	4103	26.8	BMI≥ 40 kg/m2 was second strongest independent predictor of hospitalisation after old age.
Richardson S et al. [14]	12 Hospitals in New York City area, long Island, Westchester County.	5700	41.7	Obesity was second major co-morbidity after hypertension
Lighter J et al. [15]	New York City	3615	BMI: 30–34 kg/m2 (21%) and BMI≥35 kg/m2 (16%)	patients with BMI≥35 were 3.6 times more likely to be admitted for critical care as compared to normal BMI.
Garg S et al. [16]	COVID-NET USA	–	48.3	–
Simmonet A et al. [17]	Lille, France	124	BMI >30 kg/m2 (47.6%) and BMI >35 kg/m2 (28.2%)	Need for mechanical ventilation was associated with BMI≥35 kg/m2, independently of other comorbidities.
Intensive Care National Audit and Research Centre (ICNARC) report [18]	UK	3383	72% were overweight or obese	38% of patients admitted to critical care with a diagnosis of SARS-CoV-2 were obese.Out of these 57.6% died in critical care, as opposed to approximately 45% of those with a BMI<30 kg/m2
Bello-Chavalla OY [19]	Mexico	51,633	20.7	Obesity mediated 49.5% of the effect of diabetes on COVID-19 lethality. Obesity also conferred an increased risk for ICU admission and intubation with five-fold increased risk of mortality in COVID-19 patients.
Suleyman G et al. [67]	Detroit	463	57.6% obese with 19.2% severely obese	Severe obesity was significantly associated with need for mechanical ventilation (OR 3.2; 95%CI, 1.7–6.0)