Table 2.

Number of allowable missing items to calculate UDysRS score when items are randomly missing across all patients

Subjective section Number of missing items	CCC
	Min	Median	Mean	Max.
1	0.996	0.997	0.997	0.997
2	0.992	0.993	0.993	0.994
3	0.988	0.989	0.989	0.990
4	0.982	0.984	0.984	0.985
5	0.976	0.978	0.978	0.980
6	0.968	0.971	0.971	0.973
7	0.959	0.962	0.962	0.965
8	0.946	0.951	0.951	0.954

Objective section Number of missing items	CCC
	Min.	Median	Mean	Max.
1	0.993	0.994	0.994	0.994
2	0.984	0.986	0.986	0.987
3	0.973	0.975	0.975	0.977
4	0.957	0.961	0.961	0.964
5	0.934	0.941	0.941	0.945

White rows indicate that the minimal CCC falls at or above 0.95 and is acceptable. Grey rows indicate the point when the number of missing items renders a minimal CCC below threshold for valid calculation of the UDysRS section score.

Abbreviations: CCC, Lin's Concordance.