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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