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Table 4 Results of 24-hour esophageal pH monitoring more than 1 year after surgery in patients with CAP originally observed within 4 weeks after the operation.

From: Acid regurgitation associated with persistent cough after pulmonary resection: an observational study

Case No. of reflux occurrences# Time pH <4 (min)# Time pH <4 (%) Coughing (VAS) No. of coughing occurrences# Result of pH monitor (group)
3 133 53 3.7 0 1 B
5 180 382 28.9 0 0 B
6 422 188 13.1 0 2 B
7 197 150 10.5 0 0 B
9 214 207 14.4 1 18 B
  1. #In 24-hour period, VAS: visual analog scale, SAP: symptom association probability,