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Fig. 1 | Respiratory Research

Fig. 1

From: Gastroesophageal reflux disease is a risk factor for sputum production in the general population: the Nagahama study

Fig. 1

Association between persistent sputum production and GERD in longitudinal assessment. Frequency of subjects with GERD (FSSG ≥ 8) at both assessments, in subjects with sputum production at neither assessment (N = 4406), at either assessment (N = 2278), and at both assessments (N = 1609). p < 0.0001 (Chi-squared test)

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