Relationship of meteorological factors and air pollutants with medical care utilization for gastroesophageal reflux disease in urban area

Figure 2 Prediction model of gastroesophageal reflux disease -related medical utilization using a univariate generalized additive Poisson regression model. A: Gastroesophageal reflux disease (GERD)-related medical utilizations with AT; B: GERD-related medical utilizations as with particulate matter with a diameter ≤ 2.5 µm levels ≤ 40 μg/m³; C: GERD-related medical utilizations in the range of the IQR for carbon monoxide. CO: Carbon monoxide; PM_2.5: Particulate matter with a diameter ≤ 2.5 µm; ppm: Parts-per-million.