Dissociation between 2-[18F]fluoro-2-deoxy-D-glucose positron emission computed tomography, ultrasound and clinical assessments in patients with non-severe rheumatoid arthritis, including remission

Table 4 Association between the number of PET/CT-positive joints or cumulative SUV and disease activity based on DAS₂₈-CRP or CDAI. DAS disease activity score, CRP C-reactive protein, CDAI clinical disease activity index, PET/CT positron emission computer tomography, SUV standard uptake value, AUC area under the curve, SD standard deviation

Clinical disease activity	N	Number of PET/CT- positive joints			Cumulative SUV
Clinical disease activity	N	Mean ± SD	Cut-off (AUC)	P-value	Mean ± SD	Cut-off (AUC)	P-value
DAS₂₈-CRP			8.0 (0.77)	0.0026		17.8 (0.77)	0.0046
Non-severe≤5.1	53	4.2 ± 6.1			9.2 ± 14.1
Severe> 5.1	10	13.6 ± 11.2			31.9 ± 29.9
CDAI			6.8 (0.67)	0.023		15.0 (0.65)	0.033
Non-severe≤22	48	4.4 ± 6.3			9.7 ± 14.6
Severe> 22	15	10.0 ± 10.6			22.9 ± 27.5

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