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Table 2 Examples of terms used within lexical sets

From: Identifying influenza-like illness presentation from unstructured general practice clinical narrative using a text classifier rule-based expert system versus a clinical expert

Expression type Example terms
Flu influenza, cold, muscle aches, cough, fever, URTI
Child Flu influenza, cold, muscle aches, cough, fever, URTI
Flu Definitive Negatives tonsillitis, asthma, ear check
Child Flu Definitive Negatives otitis media, tonsillitis, asthma, ear check, pneumonia
Pyrexia pyrexia, fever, hot, temperature 38-41
Respiratory influenza, flu, ILI, H1N1, URTI, cough, runny nose, cold, phlegm, chesty, sore throat
Symptoms cough, sore throat, red throat, myalgia
ILI Prophylactic tamiflu, osiltamivir, flu vaccine