Table 2.
Model-based estimates of unadjusted state-level probabilities of receiving nephrologist care at least 12 months before ESRD, overall and by four race–age subpopulations
| Probability of Receiving Nephrologist Care | Overall Population (n=373,986) | Age <65 yr | Age ≥65 yr | ||
|---|---|---|---|---|---|
| Black(n=72,712) | White(n=115,079) | Black(n=40,591)a | White(n=145,588) | ||
| Average of all states, % (95% CI) | 28.8 (25.2 to 32.7) | 24.3 (20.7 to 28.5) | 28.8 (25.3 to 32.5) | 29.3 (25.1 to 33.8) | 30.8 (27.6 to 34.1) |
| Variation in the state-level probabilities (%) among states | |||||
| Interval range containing 90% of the states | (18.5, 41.9) | (14.7, 37.5) | (18.8, 41.3) | (17.3, 45.1) | (20.7, 43.2) |
| Length of the interval range | 23.4 | 22.8 | 22.5 | 27.8 | 22.5 |
The estimated averages and variations were obtained from the null model without covariates (model 1), which was separately fit to the overall population and each of the four subpopulations. 95% CI, 95% confidence interval.
a
Seven states (Maine, Vermont, North Dakota, South Dakota, Montana, Wyoming, and Idaho) were excluded from the analysis because of fewer older black patients in these states (16 older black patients in total).