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Table 3 Model Fit Statistics for the five mini-MAC subscales

From: Rasch analysis of the Mini-Mental Adjustment to Cancer Scale (mini-MAC) among a heterogeneous sample of long-term cancer survivors: A cross-sectional study

Action Analysis # of items Chi-square Items Fit Residual Mean (SD) Persons Fit Residual Mean (SD) PSI Unidimensional t-test
Value p
Adaptive (n=751)  
 Fighting spirit and Fatalism items rescored and remove Fatalism items 11 and 17 and Fighting spirit item 18* ± 1 10 165.76 < .001 .81 (1.92) -.24 (1.35) .79 4.35
 Remove items 11, 17, 18, and 3 2 9 142.43 < .001 .79 (1.66) -.27 (1.31) .78 -
 Remove items 11, 17, 18, and 19 3 9 170.05 < .001 .72 (2.05) -.23 (1.26) .77  
 Remove items 11, 17, 18, 3, and 8- 4 8 127.12 < .001 .92 (1.42) -.27 (1.25) .76 --
 Remove items 11, 17, 18, 3, 8, and 19*£ 5 7 112.47 < .001 .78 (1.18) -.27 (1.15) .74 3.27
 Remove items 11, 17, 18, 3, 8, and 19 (subtest) 6 7 166.17 < .001 .84 (.91) -.21 (1.02) .68 2.64
Maladaptive (n=682)
 Rescore all Hopelessness-helplessness items and remove Hopelessness-helplessness items 16 and 20* and Anxious preoccupation items 7,25, and 29± 7 11 313.81 < .001 -.42 (2.63) -.44 (1.21) .80 4.38
 Remove items 16, 20, 7, 25, and 29 as well as 9, 22, 21, and 6* 8 7 123.64 < .001 .44 (0.96) -.38 (1.18) .63 1.25
 Remove items 16, 20, 7, 25, and 29 as well as items 21, 9, 22, and 6* 9 7 123.64 < .001 .44 (0.96) -.38 (1.18) .63 1.25
  1. * Items listed in the order they were deleted; ± modifications suggested when subscales analysed separately. £ Same results if delete item 19 first followed by items 3 and 8. Original adaptive subscale 13 items = Cognitive avoidance (11,17,26,27); Fighting spirit (2,10,18,23) and Fatalism (1,3,8,19,24). Original maladaptive subscale 16 items= Helplessness-hopelessness (4,6,12,14,15,16,20,21) and Anxious preoccupation (5,7,9,13,22,25,28,29).