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. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: J Geriatr Oncol. 2018 Sep 8;10(2):241–245. doi: 10.1016/j.jgo.2018.08.009

Table 3.

IRT GRM Item Parameters

Anxiety
Item		 a b1 b2 b3 b4 b5
10 2.22 0.08 1.06 1.94 2.35 3.13
11 2.28 −0.05 0.93 1.94 2.37 3.09
12 1.82 −1.02 0.71 1.20 2.15 3.13
13 2.17 −0.65 0.63 1.62 2.29 2.82
Depression
Item		 a b1 b2 b3 b4 b5
1 1.38 −1.11 0.54 1.10 2.20 3.13
2 2.09 −0.04 1.19 2.11 2.69 3.17
3 1.11 0.19 2.19 2.80 3.40 3.99
4 2.42 −0.09 1.10 2.15 2.48 3.08
5 1.68 0.23 1.42 2.41 2.76 3.32
6 2.04 −1.25 0.41 0.88 1.78 2.51
7 2.34 0.01 1.19 2.05 2.31 3.03
8 1.99 1.05 1.83 2.56 2.96
9 2.43 1.37 2.02 2.65 3.02