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Table 3 Mean difference of all locations between the digital and analogue algometer and limits of agreement in people with healthy participants and people with migraine

From: High concurrent validity between digital and analogue algometers to measure pressure pain thresholds in healthy participants and people with migraine: a cross-sectional study

  Healthy participants (n = 26) People with migraine (n = 29)
Location Mean difference in kPa (SD) P value Limits of agreement Mean difference in kPa (SD) P value Limits of agreement
Upper limit Lower Limit Upper limit Lower Limit
Dominant side
 Temporalis muscle −6.3 (10.8) 0.007 14.9 −27.9 − 6.8 (25.3) 0.16 42.8 −56.8
 C1 paraspinal muscle −3.4 (9.6) 0.8 15.4 −21.6 −8.5 (20.8) 0.04 32.3 −49.3
 Trapezius muscle −3.9 (12.4) 0.12 20.4 −28.2 −15.6 (28.6) 0.007 40.5 −71.7
 Ext. carpi radialis m. −4.0 (11.8) 0.09 19.1 −27.1 −4.4 (33.4) 0.49 61.1 −69.9
 Tibialis anterior muscle 2.3 (14) 0.4 29.7 −25.1 −12.4 (27) 0.02 40.5 −65.3
Non dominant side
 Temporalis muscle −5.7 (9.4) 0.005 12.7 −24.1 −3.5 (15.6) 0.24 27.1 −34.1
 C1 paraspinal muscle −5.8 (10.6) 0.009 14.9 −26.6 −11.7 (21.9) 0.008 31.2 −54.6
 Trapezius muscle −6.3 (12.2) 0.14 17.6 −30.2 −18.3 (29.6) 0.003 39.7 −76.3
 Ext. carpi radialis m. −4.4 (11) 0.05 17.2 −25.9 −16.2 (32.8) 0.01 48.1 −80.5
 Tibialis anterior muscle −2 (11.2) 0.36 19.9 −23.9 −11.6 (28.6) 0.04 44.5 −67.7
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The Journal of Headache and Pain

ISSN: 1129-2377

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