Fig. 1
From: Geographical discrepancy in oral food challenge utilization based on Canadian billing data
Oral Food Challenges in Québec and Ontario between 2013 and 2017. A, D and G present the number of oral food challenges (OFCs) performed in male (blue) vs female patients (red) according to age groups, in Québec hospitals, Ontario hospitals and Ontario clinics during the study period. B, E and H indicate the number of OFC performed for each year. C, F and I present the average number of OFCs performed per year by physicians in the two provinces. Each portion of the pie charts indicates the proportion of physicians with the various productivity. Physicians who performed an average of less than 1 OFC per year were excluded