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 4 Association between clinical characteristics and presence of erosion

	Least squares mean		Diff.	95% CI for Diff.		P
	Present	Absent	Diff.	Lower	Upper	P
1st MTP joint Pain VAS, mm	3.1	6.3	3.2	−6.0	12.4	0.49
Manchester Foot Pain and Disability Index	6.6	5.6	−1.0	−6.9	4.9	0.75
1st MTP joint range of motion, °	66.2	71.2	5.0	−4.8	14.8	0.32
1st MTP joint temperature, °C	25.1	26.2	1.1	0.1	2.1	0.040
Walking velocity, m/s	0.95	1.00	0.05	−0.11	0.21	0.53

Results are presented adjusted for diagnostic group. Diff. Difference in mean estimate between presence and absence, CI Confidence Interval, 1st MTP joint first metatarsophalangeal joint, ^o degrees

ISSN: 1757-1146