Fig. 3From: Upper airway stabilization by osteopathic manipulation of the sphenopalatine ganglion versus sham manipulation in OSAS patients: a proof-of-concept, randomized, crossover, double-blind, controlled studyUpper airway critical closing pressure (Pcrit) before, 30 min and 48 h after sham manipulation (SM) (left) and active manipulation (AM) (right) of the sphenopalatine ganglion. The box represents the Q1-Q3 interquartile range, in which Q1 represents the first quartile and Q3 represents the third quartile. The bar in the box represents the median. The endpoint of the lower whisker is the minimum value higher than the lower limit defined by the following formula: Q1-1.5* (Q3-Q1). The endpoint of the upper whisker is the maximum value lower than the upper limit defined by the following formula: Q3 + 1.5* (Q3-Q1). + represent individual valuesBack to article page