Validation of a susceptibility, benefits, and barrier scale for mammography screening among Peruvian women

A cross-sectional study

Moises A. Huaman, Kelly I. Kamimura-Nishimura, Mariano Kanamori, Alejandro Siu, Andres G. Lescano

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Background: Perceived beliefs about breast cancer and breast cancer screening are important predictors for mammography utilization. This study adapted and validated the Champion's scale in Peru. This scale measures perceived susceptibility for breast cancer and perceived benefits and barriers for mammography.Methods: A cross-sectional study was conducted among women ages 40 to 65 attending outpatient gynecology services in a public hospital in Peru. A group of experts developed and pre-tested a Spanish version of the Champion's scale to assess its comprehensibility (N = 20). Factor analysis, internal consistency, and test-retest reliability analyses were performed (N = 285). Concurrent validity compared scores from participants who had a mammogram and those who did not have it in the previous 15 months. T-test and multiple regression analysis adjusting for socio-demographic factors, mammography knowledge and other preventive behaviors were performed.Results: The construct validity and reliability were optimal. Cronbach-Alpha coefficients were 0.75 (susceptibility), 0.72 (benefits) and 0.86 (barriers). Concurrent validity analysis showed an association between barriers and mammography screening use in bivariate (22.3 ± 6.7 vs. 30.2 ± 7.6; p < 0.001) and multiple regression analysis (OR = 0.28, 95% CI = 0.18-0.43). Ages 50-60 years (OR = 2.35, 95% CI = 1.19-4.65), history of prior Papanicolaou test (OR = 3.69, 95% CI = 1.84-7.40), and knowledge about breast cancer and mammography (OR = 3.69, 95% CI = 1.84-7.40) were also independently associated with mammography screening use.Conclusion: Concurrent validity analysis showed that the Champion's scale has important limitations for assessing perceived susceptibility for breast cancer and perceived benefits for mammography among Peruvian women. There is still a need for developing valid and reliable instruments for measuring perceived beliefs about breast cancer and mammography screening among Peruvian women.

Original languageEnglish (US)
Article number54
JournalBMC Women's Health
Volume11
DOIs
StatePublished - Dec 7 2011
Externally publishedYes

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Mammography
Cross-Sectional Studies
Breast Neoplasms
Peru
Early Detection of Cancer
Reproducibility of Results
Regression Analysis
Papanicolaou Test
Public Hospitals
Ambulatory Care
Gynecology
Statistical Factor Analysis
Demography

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology

Cite this

Validation of a susceptibility, benefits, and barrier scale for mammography screening among Peruvian women : A cross-sectional study. / Huaman, Moises A.; Kamimura-Nishimura, Kelly I.; Kanamori, Mariano; Siu, Alejandro; Lescano, Andres G.

In: BMC Women's Health, Vol. 11, 54, 07.12.2011.

Research output: Contribution to journalArticle

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abstract = "Background: Perceived beliefs about breast cancer and breast cancer screening are important predictors for mammography utilization. This study adapted and validated the Champion's scale in Peru. This scale measures perceived susceptibility for breast cancer and perceived benefits and barriers for mammography.Methods: A cross-sectional study was conducted among women ages 40 to 65 attending outpatient gynecology services in a public hospital in Peru. A group of experts developed and pre-tested a Spanish version of the Champion's scale to assess its comprehensibility (N = 20). Factor analysis, internal consistency, and test-retest reliability analyses were performed (N = 285). Concurrent validity compared scores from participants who had a mammogram and those who did not have it in the previous 15 months. T-test and multiple regression analysis adjusting for socio-demographic factors, mammography knowledge and other preventive behaviors were performed.Results: The construct validity and reliability were optimal. Cronbach-Alpha coefficients were 0.75 (susceptibility), 0.72 (benefits) and 0.86 (barriers). Concurrent validity analysis showed an association between barriers and mammography screening use in bivariate (22.3 ± 6.7 vs. 30.2 ± 7.6; p < 0.001) and multiple regression analysis (OR = 0.28, 95{\%} CI = 0.18-0.43). Ages 50-60 years (OR = 2.35, 95{\%} CI = 1.19-4.65), history of prior Papanicolaou test (OR = 3.69, 95{\%} CI = 1.84-7.40), and knowledge about breast cancer and mammography (OR = 3.69, 95{\%} CI = 1.84-7.40) were also independently associated with mammography screening use.Conclusion: Concurrent validity analysis showed that the Champion's scale has important limitations for assessing perceived susceptibility for breast cancer and perceived benefits for mammography among Peruvian women. There is still a need for developing valid and reliable instruments for measuring perceived beliefs about breast cancer and mammography screening among Peruvian women.",
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AU - Lescano, Andres G.

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