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

Table 3 Association between clinical characteristics and presence of tophus

	Least squares mean		Diff.	95% CI for Diff.		P
	Present	Absent	Diff.	Lower	Upper	P
1st MTP joint Pain VAS, mm	2.4	6.0	3.6	−7.0	14.3	0.50
Manchester Foot Pain and Disability Index	19.8	5.9	−13.9	−19.7	−8.1	<0.001^a
1st MTP joint range of motion, °	55.1	71.2	16.1	2.4	29.7	0.021
1st MTP joint temperature, °C	28.6	26.2	−2.3	−3.9,	−0.7	0.005^a
Walking velocity, m/s	0.88	1.00	0.11	0.05	0.18	0.001^a

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

ISSN: 1757-1146