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. 2020 May 5;18:121. doi: 10.1186/s12955-020-01364-6

Table 3.

Item fit statistics for the PAM-13

PAM items (in order of difficulty) Difficulty calibration
(logits)
Infit
Mean squared
Outfit
Mean squared
1 −1.52 1.21 1.13
2 −1.50 1.58 1.97
4 −1.07 1.27 1.16
6 −0.75 0.80 0.75
3 −0.75 0.95 0.89
7 −0.55 0.95 1.04
5 −0.40 0.85 0.80
8 0.11 0.74 0.70
13 1.14 1.12 1.44
9 1.17 0.91 0.95
10 1.19 0.96 0.97
12 1.23 0.96 0.96
11 1.68 0.93 1.29

Note: Results in bold indicate values that are beyond the ideal cutoffs for infit and outfit statistics (i.e. Msq of 0.5–1.5)