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Table 2 Estimates for items parameters

From: An in-depth psychometric analysis of the Connor-Davidson Resilience Scale: calibration with Rasch-Andrich model

Item Measure Model S.E INFIT Outfit PTBISERL-EX ESTIM DISCR
MNSQ ZEMP MNSQ ZEMP CORR. EXP.
1 -0.62 0.06 0.88 -2.0 0.91 -1.4 .56 .55 1.13
2 -0.71 0.06 1.18 2.6 1.16 2.3 .48 .54 0.79
4 0.48 0.06 0.85 -2.4 0.86 -2.3 .62 .59 1.17
5 -0.26 0.06 1.10 1.6 1.16 2.3 .56 .57 0.87
6 -0.01 0.06 0.94 -0.9 0.95 -0.7 .58 .58 1.07
7 0.45 0.06 1.29 4.2 1.29 4.2 .50 .59 0.64
8 -0.66 0.06 0.85 -2.4 0.84 -2.5 .62 .55 1.20
10 -0.16 0.06 1.71 9.1 1.78 9.8 .38 .57 0.16
11 -0.25 0.06 1.14 2.0 1.14 2.1 .59 .57 0.85
12 -0.15 0.06 0.67 -5.7 0.68 -5.5 .67 .57 1.37
13 0.24 0.06 1.12 1.8 1.14 2.1 .57 .59 0.87
14 0.06 0.06 1.22 3.3 1.27 3.9 .49 .58 0.70
15 0.92 0.06 1.30 4.4 1.30 4.4 .51 .60 0.64
16 0.00 0.06 0.89 -1.8 0.87 -2.0 .62 .58 1.15
17 0.57 0.06 0.85 -2.5 0.87 -2.2 .60 .60 1.18
18 0.08 0.06 0.80 -3.3 0.80 -3.4 .66 .58 1.25
19 0.63 0.06 0.97 -0.5 0.96 -0.6 .63 .60 1.04
21 0.73 0.06 0.82 -3.0 0.82 -3.0 .65 .60 1.21
22 0.10 0.06 0.83 -2.7 0.83 -2.8 .62 .58 1.21
23 -0.02 0.06 0.93 -1.1 0.95 -0.7 .59 .58 1.08
24 0.10 0.06 0.84 -2.6 0.84 -2.6 .67 .58 1.20
25 -0.71 0.06 0.85 -2.3 0.85 -2.3 .63 .54 1.19
Items          
ᅟMEAN 0.00 0.06 1.00 -0.3 1.01 -0.1    
ᅟSD 0.48 0.00 0.23 3.3 0.24 3.4    
ᅟSeparation 7.58         
ᅟReliability 0.98         
ᅟRMSE 0.06         
ᅟRS-MC -1.00         
Persons          
ᅟMEAN 0.75 0.27 1.01 -0.2 1.01 -0.2    
ᅟSD 0.93 0.03 0.57 1.8 0.57 1.8    
ᅟSeparation 2.94         
ᅟReliability 0.90         
ᅟRMSE 0.31         
ᅟRS-MC 0.99         
ᅟCronbach α 0.91         
  1. INFIT Inlier-pattern-sensitive fit statistic, OUTFIT Outlier-sensitive fit statistic, MNSQ Mean Square, ZEMP t-standardized fit statistic, PTBISERL-EX Point-biserial correlation excluding the current observation from the raw score, CORR. Observed correlation, EXP Expected correlation, ESTIM DISCR Estimate of the local discrimination, RMSE Root-mean-square average of the standard errors, RS-MC Raw Score to Measure Correlation. SD Standard Deviation; at the bottom of the table are the statistical summaries of the items and persons evaluated