Measuring adherence to pulmonary rehabilitation 45 Table 4 Item fit statistics of the 16 items of the RAdMAT-NL and of the 13 participation items 16 items RAdMAT-NL 13 Participation items Item Outfit MSQ Infit MSQ Outfit MSQ Infit MSQ 1 1.021 1.088 1.164 1.141 2 0.720 1.023 0.750 1.041 3 0.979 1.065 1.191 1.188 4 0.639 0.784 0.704 0.827 5 0.904 0.948 1.000 1.005 6 1.957 1.379 7 2.088 1.024 8 1.624 1.360 9 0.689 0.722 0.677 0.759 10 0.612 0.741 0.659 0.785 11 0.840 0.947 0.926 0.999 12 0.686 0.785 0.701 0.810 13 0.779 0.892 0.853 0.992 14 1.394 1.360 1.670 1.516 15 0.513 0.660 0.531 0.705 16 0.708 0.884 0.999 1.056 Note: numbers in bold indicate scores on items deviate from what is expected by the model; MSQ: mean square; RAdMAT-NL: Rehabilitation Adherence Measure for Athletic Training the Dutch version Parallel analysis of the Rasch residuals also indicated multidimensionality; four factors were above chance, indicating interference with unidimensionality (Figure 2).
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