Psychometric Properties of the Hopkins Symptom Checklist-10: Rasch Analysis Results of a. Cross-Sectional Nursing Students Colombia. Methods. Analysis: ...
Psychometric Properties of the Hopkins Symptom Checklist-10: Rasch Analysis Results of a Cross-Sectional Nursing Students Colombia. Methods Analysis: Aspects related to the validity indicated by Messick were followed. Substantive: Consistency must be> 40%, which is evidence that the categories proposed by the instrument involve a measure. Likewise, is expected that all subjects tested have a standardized Outfit in a range of ± 3Z. Content: The ideal value of Outfit Mean Square (MNSQ) is 1; however values between the range 0.5 and 1.5 contribute to the measure. The correlation between items and measures should be equal to or greater than +0.3. Structural: When performing principal component analysis of the residual for establish the dimensionality you should not find any specific pattern, plus the variance explained by the measures should exceed 50% and variance explained in the first contrast should be less than 5%, in Eigenvalues below 2: finally the ideal range of loading is -0.4 and +0.4. Generalization: The separation between people and items should be greater than 0.7 and the invariance must be demonstrated by the absence of differential item functioning (DIF) when the measure is compared to age 20 or younger students. The value to determine uniform DIF is a difference of more than 0.5 between the two groups in absolute values with a p-value less than 0.05 under the technique Benjamini-Hochberg.
