Figure 4.

Selected Quantitative Sensory Testing Measures for Each Group at Baseline and Follow-Up. Two measures are presented for illustrative purposes to show observed patterns of change over time across groups. a) Pressure Pain Threshold at the temporalis muscle, a cranial site; b) Pressure Pain Threshold at the lateral epicondyle, a non-cranial site. For both measures, higher scores reflect greater pain thresholds, or lower sensitivity to pressure pain. Open diamonds (⋄) reflect Baseline values and closed circles (●) reflect Follow-Up values. No statistical inference testing was performed on these data, as our statistical approach modeled the change scores as presented in Tables 2, 3 and 4.