Table 3. Comparison of patients with true and false negative CXR.
| Patients’ characteristics | Patients with true negative CXR (n=141) | Patients with false negative CXR (n=25) | P value |
|---|---|---|---|
| Age (years) | 56 (42–67) | 63 (48–70) | 0.030 |
| Gender (F/M) | 98 (69%)/43 (31%) | 18 (72%)/7 (28%) | 0.840 |
| CC duration (months) | 48 (24–96) | 48 (36–137) | 0.771 |
| NS/ES/S | 107 (76%)/29 (21%)/5 (4%) | 25 (100%)/0/0 | 0.139 |
| Diagnosis of A or NAEB/GERD or LPR/UACS | 77 (55%)/112 (79%)/93 (66%) | 11 (44%)/14 (56%)/17 (68%) | 0.605 |
| BMI (kg/m2) | 26.8 (24.2–30.3) | 28.4 (25.0–33.0) | 0.350 |
Data are presented as median and interquartile range or numbers and percentages. F, female; M, male; CC, chronic cough; NS, non-smokers; ES, ex-smokers; S, smokers; A, asthma; NAEB, nonasthmatic eosinophilic bronchitis; GERD, gastroesophageal reflux disease; LPR, laryngopharyngeal reflux; UACS, upper airway cough syndrome; BMI, body mass index; CXR, chest radiograph; CT, computed tomography.