Table 4.

Top features from NLP model using all radiology reports (negative weights favor the non-ARDS cases and positive weights favor ARDS cases)

Positive Concept Unique Identifier (CUI) features (weights from linear support vector machine classifier)

Respiratory Distress Syndrome, Adult (0.22); Malaise (0.21); Fluid overload (0.19); Aspiration-action (0.17); Fundus (0.16); Both lungs (0.15); Communicable diseases (0.15); Pulmonary edema (0.13); Lung field (0.13); Infiltration (0.12); learn transplantation (0.12); Air (0.11); Cardia of stomach (0.11); Inhalation injury (0.11); Rest (0.10); On ventilator (0.10); Structure of subclavian vein (0.10); Disease progression (0.10); Reflecting (0.10); Severe pre-eclempsia (0.10); Veins (0.09); Surface region of upper chest (0.09); Liver cirrhosis (0.09); Hyperemia (0.08); Closure by staple (0.08)

Negative Concept Unique Identifier (CUI) features (weights from linear support vector machine classifier)

Dose pull (0.09); Edema (0.08); Structure of carina (0.08); Transplantation of liver (0.08); Arteries (0.08); plain chest x-ray (0.08); pneumothorax (0.08); tracheal extubation (0.08); transjugular intrahepatic portosystemic shunt procedure (0.07); intestinal obstruction (0.07); nasogastric feeding (0.06); trachea (0.06); neck (0.06); chronic obstructive airway disease (0.06); upper abdomen structure (0.06); gas dosage form (0.06); fever (0.06); probably present (0.05); head (0.05); atelectasis (0.05); widened mediastinum (0.05); skin appearance normal (0.05); gait normal (0.05); comminuted fracture type (0.05); limb structure (0.05)