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Table 1 Characteristics of the COVID-19 positive cohort taking NSAIDs and the control cohort, before and after propensity matching

From: NSAID use and clinical outcomes in COVID-19 patients: a 38-center retrospective cohort study

  Treated Before propensity matching After propensity matching
Control SMD Control SMD
Age (years) 47.4 53.7 − 0.33 47.1 0.01
Race      
 Asian 3.1% 3.7% − 0.03 3.1% 0.00
 Black or African American 21.6% 20.9% 0.02 22.3% − 0.02
 Missing/unknown 25.1% 23.3% 0.04 24.8% 0.01
 Native Hawaiian or Other Pacific Islander 0.2% 0.3% − 0.01 0.2% 0.00
 Other 0.9% 0.9% − 0.01 0.8% 0.01
 White 49.1% 50.9% − 0.04 48.9% 0.00
Ethnicity      
 Hispanic or Latino 24.8% 22.0% 0.06 23.8% 0.02
 Missing/unknown 5.4% 8.4% − 0.13 5.4% 0.00
 Not Hispanic or Latino 69.8% 69.6% 0.00 70.8% − 0.02
Gender      
 Female 59.7% 50.1% 0.20 59.1% 0.01
 Male 40.3% 49.8% − 0.20 40.9% − 0.01
 Other 0.0% 0.0% 0.01 0.0% 0.00
Smoking status      
 Current or former 39.8% 29.9% 0.20 36.7% 0.06
 Non smoker 60.2% 70.1% − 0.20 63.3% − 0.06
BMI (kg/m2) 31.3 29.7 0.18 31.0 0.03
Charlson Comorbidity Index (mean score) 0.98 1.43 − 0.23 0.96 0.01
Alcoholic liver damage 0.6% 1.0% − 0.05 0.6% 0.00
Chronic hepatitis 1.0% 1.1% − 0.01 0.9% 0.01
Diabetes type 2 16.7% 18.0% − 0.03 16.1% 0.02
Hepatic failure 0.5% 1.2% − 0.11 0.5% 0.00
Hypertension 30.8% 31.3% − 0.01 29.9% 0.02
Ischemic heart disease 4.9% 7.0% − 0.10 4.9% 0.00
Lupus 0.7% 0.6% 0.02 0.7% 0.00
Malignant neoplasm (lymphoid hematopoietic related tissue) 2.0% 2.0% 0.00 2.0% 0.00
Neoplasm 19.4% 17.2% 0.06 19.2% 0.00
Nonischemic heart disease 20.5% 24.4% − 0.10 20.4% 0.00
Vascular dementia 0.4% 0.8% − 0.07 0.3% 0.00
Alzheimer's disease 0.4% 1.0% − 0.09 0.4% 0.01
Cerebral infarction 1.7% 2.9% − 0.10 1.6% 0.01
Chronic respiratory disease 13.1% 13.2% 0.00 12.8% 0.01
Dementia associated with another disease 1.0% 1.5% − 0.05 0.9% 0.01
Diabetes type 1 1.4% 1.5% − 0.01 1.4% 0.00
Hepatic fibrosis 1.2% 2.2% − 0.09 1.2% 0.00
Hepatic steatosis 4.3% 3.2% 0.06 4.0% 0.02
Hypertensive kidney disease 3.1% 6.3% − 0.19 3.1% 0.00
Nicotine dependence 9.8% 8.9% 0.03 9.6% 0.01
Nonhypertensive chronic kidney disease 5.5% 11.2% − 0.25 5.4% 0.00
Other liver disease 5.2% 5.4% − 0.01 4.8% 0.02
Portal hypertension 0.5% 1.2% − 0.10 0.5% 0.00
Rheumatoid arthritis 1.9% 1.3% 0.04 1.8% 0.01
Unspecified dementia 1.2% 2.7% − 0.14 1.1% 0.01
Psoriasis 1.0% 0.8% 0.01 0.9% 0.00