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Table 1 Baseline characteristics

From: OPTimal IMAging strategy in patients suspected of non-traumatic pulmonary disease at the emergency department: chest X-ray or ultra-low-dose chest CT (OPTIMACT) trial—statistical analysis plan

Item

Specification

Ultra-low-dose chest CT (N)

Chest X-ray (N)

Age, years (mean, +/−SD)

   

Gender, F (n, %)

  

Comorbidity (n, %)

  

Diabetes

With end organ failurec

  

No end organ failurec

  

Liver disease

Chronic hepatitis

  

Cirrhosis

  

Solid tumora

Locally advanced

  

Metastasized

  

Kidney disease

Any

  

History of myocardial infarction

   

Chronic cardiac failureb

  

Cerebrovascular diseaseb

  

Dementiab

  

Peripheral vascular diseaseb

  

Hemiplegiab

  

Connective tissue diseaseb

  

Leukemiaa

  

Malignant lymphomaa

  

History of intestinal ulcer(s)b

  

Chronic obstructive pulmonary disease

  

Asthma

  

Cystic fibrosis

  

Interstitial lung disease

  

History of thrombo-embolic disease

  

Sickle cell disease

  

Immunocompromised

HIV positive

  

Neutropenia

  

Chemotherapy

  

Leukemia/lymphoma

  

Organ transplant

  

Immunosuppressive medication

  

Total

  
  1. aWithin the past 5 years, except for chronic lymphatic leukemia
  2. bSee Charlson Comorbidity Index for exact clarification [22]
  3. cEnd organ failure: retinopathy, neuropathy, or nephropathy