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. 2012 Apr-Jun;19(2):19–26.

Table 1b:

Rasch analysis reliability table for 36 measured items

Raw score Count Measure Model error Infit Outfit
MNSQ ZSTD MNSQ ZSTD
Mean 296.4 81.0 0.00 0.11 0.99 –0.1 1.00 –0.1
SD 53.0 0.0 0.58 0.01 0.23 1.6 0.24 1.6
Max 388.0 81.0 1.25 0.13 1.54 3.3 1.56 3.5
Min 178.0 81.0 –1.12 0.10 0.60 –2.8 0.62 –2.9
Real RMSE 0.11 Adj. SD 0.57 Separation 5.14 Person reliability 0.96
Model RMSE 0.11 Adj. SD 0.57 Separation 5.37 Person reliability 0.97
SE of Item mean = 0.10

Umean = 0.000 uscale = 1.000

Item raw score-to-measure correlation = –1.00

2916 data points. Approximate log-likelihood chi-square: 8390.88