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Emerging Infectious Diseases Journal
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Volume 7: No. 5, September 2010

ORIGINAL RESEARCH
Evaluating a Preventive Services Index to Adjust for Healthy Behaviors in Observational Studies of Older Adults

Age, y Original Index PCA Score
60-69 1.90 0.0820
70-74 1.84 0.0219
75-79 1.74 −0.0254
≥80 1.43 −0.1879

Figure 1. Original preventive services index and principal component analysis score by age group (N = 38,046). Abbreviations: PCA, principal components analysis. Data are from “PCA: Men or Women” in Table 3, where variables are influenza vaccination, pneumococcal vaccination, colon cancer screening, prostate-specific antigen test, mammogram, and preventive office visit.

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The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.


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