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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Sch Psychol Q. 2013 Nov 25;29(1):21–37. doi: 10.1037/spq0000037

Table 5. Agreement on LD identification between the C/DM and XBA methods at different low achievement cut points.

Approach: Approach
C/DM < 85 C/DM < 90 XBA < 85 XBA < 90
C/DM < 85 - 62.1 30.0 13.6
C/DM < 90 - - 20.0 20.5
XBA < 85 0.31 0.11 - 23.4
XBA < 90 -0.04 0.03 - -

Below diagonal = kappa; above diagonal = percentage overlap (total identified by both approaches/total identified).