Table 5.
Cox Proportional Adjusted Hazard Ratios for Time to Resolution, According to Number of Unique Barriers, for Navigated Subjects in the Boston Patient Navigation Research Program
| Variable | Levels | aHR (95% CI) | p |
|---|---|---|---|
| Number of barriers | None | 1.00 (reference) | |
| 1 | 0.81 (0.56, 1.17) | 0.2611 | |
| 2 | 0.55 (0.37, 0.81) | 0.0025 | |
| 3+ | 0.31 (0.21, 0.46) | <0.0001 | |
| Age | Years (continuous) | 1.07 (1.04, 1.11) | <0.0001 |
| Age x log (time to resolution) | 0.99 (0.98, 1.00) | 0.0023* | |
| Race | White | 1.00 (reference) | |
| African American | 0.76 (0.58, 0.98) | 0.0317 | |
| Hispanic | 1.15 (0.91, 1.47) | 0.2463 | |
| Other | 1.47 (1.25, 1.73) | <0.001 | |
| Language | English | 1.00 (reference) | |
| Spanish | 1.05 (0.85, 1.31) | 0.6531 | |
| Other | 0.91 (0.68, 1.20) | 0.4839 | |
| Insurance | Private | 1.00 (reference) | |
| Public | 0.93 (0.80, 1.08) | 0.3449 | |
| Uninsured | 1.01 (0.81, 1.25) | 0.9495 |
N=1481 subjects.
Adjusted hazard ratio (aHR) <1.0 indicates a lower likelihood of timely resolution.
Cox proportional analysis adjusted for age, race/ethnicity, language, and insurance, with clustering by primary patient navigator.
*
The time by age interaction indicates that the effect of age changes with time. Combining the slopes for the age and interaction term gives aHRs for a 10-year difference in age of 1.26, 1.09, and 1.00 at 30, 90, and 180 days, respectively.