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Table 1 The basic characteristics of 43 patients with chronic cough

From: Capability of hypertonic saline cough provocation test to predict the response to inhaled corticosteroids in chronic cough: a prospective, open-label study

Age (years) 55.6 (51.9 – 59.4)
Number of females 32 (74%)
Body mass index (kg/m2) 27.4 (25.8 – 29.0)
Number of ex smokers 20 (47%)
Number of atopic patients 14 (33%)
Duration of cough (years) 8.5 (5.5 – 11.6)
Most probable cause of cougha Rhinitis 22 (51%)
Esophageal reflux 14 (33%)
Asthma 9 (21%)
Leicester questionnaire total score 13.2 (12.2 – 14.3)
Saline coughs-to-dose ratio (coughs/Osm/kg) 7.24 (5.16 – 9.33)
Number of saline responders 21 (49%)
Histamine response-to-dose ratiob (%/mg) 7.94 (4.74 – 13.3)
Number of histamine respondersc 21 (50%)
Nitric oxide concentration (ppm) 16.8 (12.7 – 20.9)
FEV1 (% of predicted) 93.7 (90.2 – 97.3)
FEV1 rise after salbutamol (%) 4.05 (2.86 – 5.24)
PEF variation in ambulatory monitoring (%) 7.13 (5.76 – 8.51)
  1. a Based on the results of the Cough Clinic diagnostic questionnaire. Two patients had more than one most probable cause; b geometric mean and 95% confidence interval; c histamine challenge was missed in one patient due to technical reasons.