Table 3.
Factor Loadings for the Principal Component Analysis for Components of Preventive Services Index,a Silver Sneakers and EnhanceFitness Programs, 1997-2004
| Preventive Services in Past 2 Years | PCA: Men or Women (N = 38,046) | PCA: Men and Women (N = 38,046) | PCA: Men Only (n = 14,443) | PCA: Women Only (n = 23,603) |
|---|---|---|---|---|
| Influenza vaccination | 0.844 | 0.855 | 0.824 | 0.850 |
| Pneumococcal vaccination | 0.535 | 0.554 | 0.532 | 0.531 |
| Colon cancer screening | 0.767 | 0.779 | 0.758 | 0.768 |
| PSA test (n = 14,443) | 0.434 | NA | 0.630 | NA |
| Mammogram (n = 23,603) | NA | NA | 0.393 | |
| Preventive office visits | 0.866 | 0.870 | 0.885 | 0.859 |
Abbreviations: PCA, principal component analysis; PSA, prostate-specific antigen test; NA, not applicable.
Variables for PCA: men or women — influenza vaccination, pneumococcal vaccination, colon cancer screening, PSA test, mammogram, preventive office visit; for PCA: men and women — influenza vaccination, pneumococcal vaccination, colon cancer screening, preventive office visit; for PCA: men only — influenza vaccination, pneumococcal vaccination, colon cancer screening, PSA test, preventive office visit; for PCA: women only — influenza vaccination, pneumococcal vaccination, colon cancer screening, mammogram, preventive office visit.