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. Author manuscript; available in PMC: 2013 Oct 1.

Published in final edited form as: J Consult Clin Psychol. 2012 Apr 9;80(5):773–785. doi: 10.1037/a0028032

Scatterplots depicting the predictive value of physiological (PCO₂, RR, HR) and experiential (anxiety, DSM-IV panic symptoms) reactivity on panic symptom severity (PDSS) reductions. Slope of PDSS (on y-axis) represents the slope of change from pre –through follow-up. Values for fear reactivity (x-axis) represent average change for within session (WS) activation (peak minus baseline), WS reduction (peak minus recovery), and between-session (BS) reduction (slope of peak levels across session). Calculations for PCO₂ were reversed since higher numbers for PCO₂ reflect lesser (not greater) pathology. Only the relations between anxiety and DSM-IV symptoms with reductions in PDSS were significant (p≤.01; indicated as regression line).

Scatterplots depicting the predictive value of physiological (PCO₂, RR, HR) and experiential (anxiety, DSM-IV panic symptoms) reactivity on panic symptom severity (PDSS) reductions. Slope of PDSS (on y-axis) represents the slope of change from pre –through follow-up. Values for fear reactivity (x-axis) represent average change for within session (WS) activation (peak minus baseline), WS reduction (peak minus recovery), and between-session (BS) reduction (slope of peak levels across session). Calculations for PCO₂ were reversed since higher numbers for PCO₂ reflect lesser (not greater) pathology. Only the relations between anxiety and DSM-IV symptoms with reductions in PDSS were significant (p≤.01; indicated as regression line).