Logistic Regression of Factors Significantly Associated with Flu Shot in the Current Year (1998)*†
| Variable | Beta | Wald Statistic | df | P Value |
|---|---|---|---|---|
| Constant | 4.829 | 110 | 1 | <.01 |
| Disease burden | −0.187 | 80 | 1 | <.01 |
| Level of education | −0.127 | 59 | 1 | <.01 |
| African American | −0.699 | 49 | 1 | <.01 |
| HMO member | 0.475 | 34 | 1 | <.01 |
| Current smoker | −0.471 | 27 | 1 | <.01 |
| Married | 0.296 | 21 | 1 | <.01 |
| Age | −0.20 | 19 | 1 | <.01 |
| Urban resident | −0.270 | 15 | 1 | <.01 |
| No. of primary care provider claims | −0.014 | 12 | 1 | <.01 |
| Hispanic ancestry | −0.368 | 11 | 1 | <.01 |
| Total no. of physician claims | −0.005 | 9 | 1 | <.01 |
| Household income | 0.00 | 6 | 1 | <.05 |
* Flu shot: yes = 0, no = 1; for all categorical variables (African American, Hispanic ancestry, smoking, married?, HMO membership, living in urban area) yes = 0, no = 1.
† Variables not statistically significant in the model: self-reported health status, level of disability, and number of specialist physician claims.