TABLE 2.
Multivariable Logistic Regression Results of Predictive Characteristics for LCGP Use
| Characteristic | Adjusted Odds Ratio | 95% Wald Confidence Limits | |
| Lower | Upper | ||
| Age | |||
| 65-74 | Ref. | Ref. | Ref. |
| 75-84 | 0.92 | 0.74 | 1.15 |
| 85+ | 0.77 | 0.53 | 1.12 |
| Gender | |||
| Male | Ref. | Ref. | Ref. |
| Female | 1.04 | 0.84 | 1.29 |
| Employment | |||
| Unemployed | Ref. | Ref. | Ref. |
| Employed | 0.97 | 0.71 | 1.34 |
| Education | |||
| Less than high school | Ref. | Ref. | Ref. |
| High school or equivalent | 1.41 | 1.04 | 1.92 |
| College or higher | 1.44 | 0.97 | 2.14 |
| Marital status | |||
| Not married | Ref. | Ref. | Ref. |
| Married | 0.82 | 0.64 | 1.07 |
| Income category | |||
| < 100% of FPL | Ref. | Ref. | Ref. |
| 100%-125% of FPL | 1.12 | 0.61 | 2.05 |
| 125%-200% of FPL | 1.36 | 0.85 | 2.17 |
| 200%-400% of FPL | 1.20 | 0.82 | 1.76 |
| > 400% of FPL | 1.39 | 0.90 | 2.16 |
| Charlson Comorbidity Index (CCI) | |||
| CCI score < 1 | Ref. | Ref. | Ref. |
| CCI score 2-4 | 0.97 | 0.77 | 1.22 |
| CCI score 5-6 | 1.14 | 0.54 | 2.43 |
| CCI score > 7 | 2.20 | 0.43 | 11.36 |
| Race | |||
| White | Ref. | Ref. | Ref. |
| Hispanic | 1.15 | 0.80 | 1.67 |
| Black | 1.18 | 0.82 | 1.71 |
| Asian | 0.75 | 0.44 | 1.26 |
| Other | 1.14 | 0.48 | 2.68 |
| MSA | |||
| Rural | Ref. | Ref. | Ref. |
| Urban | 0.94 | 0.65 | 1.36 |
| Region | |||
| Northeast | Ref. | Ref. | Ref. |
| Midwest | 1.22 | 0.72 | 2.05 |
| South | 1.31 | 0.79 | 2.18 |
| West | 1.33 | 0.80 | 2.23 |
| Insurance type | |||
| Medicare | Ref. | Ref. | Ref. |
| Medicare managed care | 1.21 | 0.92 | 1.60 |
| Medicare + Tricarea | 0.52 | 0.31 | 0.88 |
| Medicare + Medicaida | 0.33 | 0.21 | 0.52 |
| Prescription drug coverage | |||
| Yes | Ref. | Ref. | Ref. |
| No | 1.29 | 0.85 | 1.96 |
| Number of unique medicationsa | 1.12 | 1.09 | 1.14 |
aSignificant at P < 0.05.
LCGP = low-cost generic program; FPL = federal poverty limit; MSA = metropolitan statistical area.