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Table 5 Dimension PI: Item difficulties, standard errors, Infit, Outfit, T-test and correlations, estimated from final models (*)

From: Rasch analysis of consumer attitudes towards the mountain product label

INPUT: 310 PERSON, 47 ITEM
REPORTED: 190 PERSON 10 ITEM 5 CATS
PERSON: REAL SEPARATION: 2.75 RELIABILITY.: 0.88
ITEM: REAL SEPARATION: 7.68 RELIABILITY.: 0.98
ITEM DIFFICULTY MEASURE MODEL S.E INFIT OUTFIT PTMEA CORR
MNSQ Ttest MNSQ Ttest
PI09 2.00 .13 1.21 1.69 1.19 1.38 .86
PI10 1.54 .13 1.01 .15 1.00 .07 .87
PI08 .98 .13 1.50 3.74 1.62 4.31 .80 (*)
PI04 .62 .14 1.33 2.59 1.31 2.38 .81 (*)
PI05  − .06 .14 .81  − 1.64 .78  − 1.79 .85
PI07  − .37 .15 1.00 .08 .89  − .82 .82
PI01  − .76 .15 .76  − 2.09 .74  − 1.82 .83 (*)
PI02  − 1.11 .15 .60  − 3.77 .53  − 3.38 .83 (*)
PI03  − 1.41 .16 .86  − 1.10 .75  − 1.40 .77
PI06  − 1.43 .16 .87  − 1.05 .71  − 1.65 .77
MEAN .00 .14 .99  − .1 .95  − .3  
P.SD 1.17 .01 .26 2.2 .32 2.2  
  1. (*)Final model with PI08 for 14 persons set to missing