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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Arthritis Care Res (Hoboken). 2017 Aug;69(8):1260–1265. doi: 10.1002/acr.23103

Table 2.

Mean discordance and intraclass correlations in visits of all patients and in subgroups by level of rheumatoid arthritis activity. EGA = evaluator global assessment. PGA = patient global assessment.

Mean Discordance (± standard deviation) Intraclass Correlation (95% confidence
interval)
Number
of visits		 Rating
scale/EGA		 PGA/EGA p* Rating scale/EGA PGA/EGA
All visits 401 2.3 ± 24.0 8.5 ± 22.4 < .0001 0.39 (0.32, 0.47) 0.31 (0.23, 0.40)
Low disease activity
or remission
(DAS28 < 3.2)		 41 3.8 ± 14.4 8.6 ± 20.2 .06 0.58 (0.28, 0.77) 0.49 (0.28, 0.78)
Moderate disease
activity
(3.2 ≤ DAS28 ≤ 5.1)		 197 6.3 ± 23.8 10.3 ± 22.4 .007 0.48 (0.40, 0.58) 0.44 (0.36, 0.57)
High disease activity
(DAS28 > 5.1)		 163 −2.9 ± 25.2 6.2 ± 22.8 <.0001 0.36 (0.26, 0.48) 0.16 (0.03, 0.34)
*

p for paired differences.