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The relatedness of individual items to the overall score was also assessed using the corrected item-total correlation coefficients.
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We used the corrected item-total correlation to retain an item.
The score resulting from the summative scale was used to determine GPs' overall job satisfaction, while the corrected item-total correlation was used to determine the strength of each factor.
Using data from 3 previously published trials, we calculated the corrected item-total correlations (CITCs) or the correlation of each test with the battery total score.
Finally, the item/domain discriminating power was assessed through the corrected item-total correlations.
The corrected item-total correlations for the 12 items were all higher than the minimum recommended level of 0.2 [24].
Cronbach's α ranged from 0.71 to 0.88 and the corrected item-total correlations were acceptable.
Next, the corrected item-total correlations and the correlations of the distractors with the total score were inspected.
The corrected item-total correlation is: rtr = 0.53 – 0.53.
The corrected item-total correlations for the THI items varied widely from −0.19 to 0.85.
The corrected item-total correlation coefficients did not reveal any outlier in the items.
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CEO of Professional Science Editing for Scientists @ prosciediting.com