Table 2.
Multivariable-Adjusted Relationship between Receipt of Central DXA in 2005 or 2006 and Distance to the Nearest DXA Provider*
| Factor | Risk Ratio (95% Confidence Interval) |
|---|---|
| Distance to Nearest DXA Provider, miles | |
| < 5 | Referent |
| 5–9 | 0.92 (0.91 – 0.94) |
| 10–24 | 0.79 (0.85 – 0.78) |
| 25–39 | 0.43 (0.40 – 0.48) |
| 40–54 | 0.32 (0.25 – 0.40) |
| 55+ | 0.26 (0.19 – 0.34) |
| Age, years | |
| 65–69 | Referent |
| 70–74 | 0.97 (0.96– 0.99) |
| 75–79 | 0.87 (0.86 – 0.89) |
| 80–84 | 0.70 (0.68 – 0.71) |
| 85+ | 0.40 (0.38 – 0.40) |
| Sex | |
| Women | 6.39 (6.27 – 6.52) |
| Men | Referent |
| Race/ethnicity | |
| Caucasian | Referent |
| African American | 0.65 (0.63 – 0.67) |
| Other | 0.90 (0.88 – 0.93) |
| Annual Income, dollars | |
| < 29,999 | Referent |
| 30,000–44,999 | 1.09 (1.07 – 1.11) |
| 45,000–59,999 | 1.16 (1.14 – 1.18) |
| 60,000–74,999 | 1.23 (1.20 – 1.26) |
| 75,000+ | 1.34 (1.31 – 1.38) |
| U.S. Geographic Region | |
| East North Central | Referent |
| East South Central | 0.99 (0.96 – 1.02) |
| Middle Atlantic | 0.96 (0.94 – 0.98) |
| Mountain | 1.16 (1.13 – 1.20) |
| New England | 1.06 (1.03 – 1.08) |
| Pacific | 1.05 (1.03 – 1.07) |
| South Atlantic | 1.15 (1.13 – 1.17) |
| West North Central | 1.08 (1.05 – 1.10) |
| West South Central | 1.14 (1.12 – 1.17) |
| Charlson Cormorbidity Score | |
| 0 | Referent |
| 1 | 0.85 (0.83 – 0.86) |
| 2 | 0.95 (0.94 – 0.97) |
| 3 | 0.81 (0.79 – 0.82) |
| 4+ | 0.72 (0.70 – 0.73) |
| Number of Physician Office Visits | |
| < 2 Visits | Referent |
| 2–4 Visits | 1.85 (1.80 – 1.90) |
| 5–9 Visits | 2.26 (2.20 – 2.31) |
| 10–14 Visits | 2.55 (2.48 – 2.61) |
| 15+ Visits | 2.90 (2.82 – 2.98) |
| At least 1 visit to a rheumatologist or endocrinologist in 2004 | 1.48 (1.45 – 1.51) |
*
DXA providers included both non-facility and facility sites