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Thorax 59:342-346 doi:10.1136/thx.2004.021832
  • Review series

Cough • 6: Which investigations are most useful in the diagnosis of chronic cough?

Table 1

Predictive value of symptom characteristics obtained from history

No with positive history No correctly identified Positive predictive value (%)
PNDS = postnasal drip syndrome; GORD = gastro-oesophageal reflux disease.
Reproduced from McGarvey et al11 with permission.
Asthma (nocturnal cough, precipitated by cold air, exercise, aerosols) 27 15 56
PNDS (throat clearing, sensation of postnasal drip, nasal discharge, previous sinusitis) 27 14 52
GORD (dyspepsia, cough worse after meals) 20 8 40

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