TY - ABST

T1 - Psychosocial consequences of cancer screening - development and validation of a questionnaire

AU - Brodersen, John

AU - Thorsen, H

AU - Kreiner, Svend

PY - 2010

Y1 - 2010

N2 - Objective: The objective of this study was to extend the Consequences ofScreening (COS) Questionnaire for use in a lung cancer screening by testingfor comprehension, content coverage, dimensionality, and reliability.Methods: In interviews, the suitability, content coverage, and relevance ofthe COS were tested on participants in a lung cancer screening program.The results were thematically analyzed to identify the key consequences ofabnormal and false-positive screening results. Item Response Theory andClassical Test Theory were used to analyze data. Dimensionality, objectivity,and reliability were established by item analysis, examining the fitbetween item responses and Rasch models.Results: Eight themes specifically relevant for participants in lung cancerscreening results were identified: “self-blame,” “focus on symptoms,”“stigmatization,” “introvert,” “harm of smoking,” “impulsivity,”“empathy,” and “regretful of still smoking.” Altogether, 26 new items forpart I and 16 new items for part II were generated.These themes wereconfirmed to fit a partial-credit Rasch model measuring different constructsincluding several of the new items.Conclusion: In conclusion, the reliability and the dimensionality of acondition-specific measure with high content validity for persons havingabnormal or false-positive lung cancer screening results have been demonstrated.This new questionnaire called Consequences of Screening in LungCancer (COS-LC) covers in two parts the psychosocial experience in lungcancer screening. Part I: “anxiety,” “behavior,” “dejection,” “sleep,” “selfblame,”“focus on airway symptoms,” “stigmatization,” “introvert,” and“harm of smoking.” Part II: “calm/relax,” “social network,” “existentialvalues,” “impulsivity,” “empathy,” and “regretful of still smoking.”Keywords: lung cancer, psychometrics, public health, questionnaire development,secondary prevention.

AB - Objective: The objective of this study was to extend the Consequences ofScreening (COS) Questionnaire for use in a lung cancer screening by testingfor comprehension, content coverage, dimensionality, and reliability.Methods: In interviews, the suitability, content coverage, and relevance ofthe COS were tested on participants in a lung cancer screening program.The results were thematically analyzed to identify the key consequences ofabnormal and false-positive screening results. Item Response Theory andClassical Test Theory were used to analyze data. Dimensionality, objectivity,and reliability were established by item analysis, examining the fitbetween item responses and Rasch models.Results: Eight themes specifically relevant for participants in lung cancerscreening results were identified: “self-blame,” “focus on symptoms,”“stigmatization,” “introvert,” “harm of smoking,” “impulsivity,”“empathy,” and “regretful of still smoking.” Altogether, 26 new items forpart I and 16 new items for part II were generated.These themes wereconfirmed to fit a partial-credit Rasch model measuring different constructsincluding several of the new items.Conclusion: In conclusion, the reliability and the dimensionality of acondition-specific measure with high content validity for persons havingabnormal or false-positive lung cancer screening results have been demonstrated.This new questionnaire called Consequences of Screening in LungCancer (COS-LC) covers in two parts the psychosocial experience in lungcancer screening. Part I: “anxiety,” “behavior,” “dejection,” “sleep,” “selfblame,”“focus on airway symptoms,” “stigmatization,” “introvert,” and“harm of smoking.” Part II: “calm/relax,” “social network,” “existentialvalues,” “impulsivity,” “empathy,” and “regretful of still smoking.”Keywords: lung cancer, psychometrics, public health, questionnaire development,secondary prevention.

M3 - Conference abstract in journal

VL - 13

SP - 601

EP - 612

JO - Value in Health

JF - Value in Health

SN - 1098-3015

IS - 5

Y2 - 23 June 2010 through 25 June 2010

ER -