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Table 1 Patient characteristics at the time of referral

From: Management of patients with chronic cough using a clinical protocol: a prospective observational study

Total number of patients (number female) 112 (73)
Mean age 56.2 years
Median duration of cough (range) 3 years (0.25-64 years)
 Smoking history:  
  Current smokers 6 (5%)
  Ex-smokers 46 (41%)
  Never smoked 60 (54%)
 Sputum production:  
  No sputum 45 (40%)
  Clear sputum 43 (38%)
  Purulent sputum 23 (21%)
  Cough preceded by URTI 35 (31%)
 Symptoms associated with cough:  
  Wheeze 46 (41%)
  Breathlessness 60 (54%)
  Acid taste in mouth 26 (23%)
  Heartburn 48 (43%)
  PND 40 (36%)
  Throat clearing 73 (65%)
  1. URTI = upper respiratory tract infection, PND = post-nasal drip. Cough duration did not have a normal distribution.