Fig. 3From: High concurrent validity between digital and analogue algometers to measure pressure pain thresholds in healthy participants and people with migraine: a cross-sectional studyA Differences Pressure Pain Thresholds digital and analogue algometer C1 paraspinal muscles dominant side in healthy participants (mean difference, upper and lower limit). B Differences Pressure Pain Thresholds digital and analogue algometer C1 paraspinal muscles dominant side in people with migraine (mean difference, upper and lower limit)Back to article page