Determining a low disease activity threshold for decision to maintain disease-modifying antirheumatic drug treatment unchanged in rheumatoid arthritis patients

Table 1 Determinants of inter-panelist perfect and quasi-perfect agreement

	Perfect agreement		Quasi-perfect agreement
	Odds ratio	95% confidence interval	Odds ratio	95% confidence interval
Patient global assessment of disease activity	1.01	0.97 to 1.05	1.06	1.01 to 1.12
Erythrocyte sedimentation rate	1.05	0.99 to 1.12	1.15	1.04 to 1.27
Number of tender joints	0.88	0.41 to 1.88	3.00	1.23 to 7.31
Number of swollen joints	0.99	0.88 to 1.11	-^a

The probability of inter-panelist perfect agreement was significantly higher when the patient global evaluation of activity, erythrocyte sedimentation rate and number of swollen joints were higher. ^aNot included in the model because of quasi-complete separation of the data point.

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