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Table 2 Association between clinical characteristics and presence of the double contour sign

From: Are ultrasound features at the first metatarsophalangeal joint associated with clinically-assessed pain and function? A study of people with gout, asymptomatic hyperuricaemia and normouricaemia

  Least squares mean Diff. 95% CI for Diff. P
  Present Absent Lower Upper
1st MTP joint Pain VAS, mm 3.4 7.0 3.5 −1.0 8.0 0.12
Manchester Foot Pain and Disability Index 10.1 4.8 −5.4 −7.8 −2.9 <0.001a
1st MTP joint range of motion,° 68.8 72.2 2.4 −3.2 8.1 0.40
1st MTP joint temperature, °C 26.8 26.0 −0.8 −1.5 0.1 0.018
Walking velocity, m/s 1.02 1.00 −0.02 −0.10 0.05 0.52
  1. Results are presented adjusted for diagnostic group. aSignificantly different at Bonferroni-adjusted level of < 0.01. Diff. Difference in mean estimate between presence and absence, CI Confidence Interval, 1st MTP joint first metatarsophalangeal joint, o degrees