Self-reported flares are predictors of radiographic progression in rheumatoid arthritis patients in 28-joint disease activity score remission: a 24-month observational study

Table 2 Numbers of flares according to radiographic evidence of progression at 24-month follow up

	All patients	No radiographic progression	Radiographic progression	P value^a
Number	149	131	18
OF, number/year, median (IQR)	1.00 (0.50; 1.38)	0.98 (0.50; 1.00)	1.50 (1.00; 1.50)	<0.01
SRF, number/year, median (IQR)	0.50 (0.14; 1.00)	0.50 (0.10; 1.00)	1.00 (0.50; 1.00)	0.01
SF, number/year, median (IQR)	0.34 (0; 0.50)	0.24 (0; 0.50)	0.50 (0.24; 0.63)	0.08

IQR interquartile range, OF overall flares, SRF self-reported flares, SF short flares. ^aThe Mann-Whitney test was used to calculate p values

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