Figure 2From: Primary ciliary dyskinesia (Siewert's / Kartagener's Syndrome): Respiratory symptoms and psycho-social impactThe Symptom scale of the St. George's Respiratory Questionnaire plotted in relation to the age of the respondent. PCD-SS individuals are shown as solid black circles (•) and PCD-SI individuals as open black circles (○). The solid black line is the lowess curve fitted through the data.Back to article page