Table 2.
Demographic Characteristics, Predictor Variables, and Bone Mineral Density Data
| Variable | Total n = 203 | NHW n = 59 | HIS n = 56 | AA n = 88 | Significance |
|---|---|---|---|---|---|
| Age (y) | 60.2±9.6 | 60.1±9.2 | 60.8±9.4 | 59.9±10.0 | F, df2, 200 = 0.14, P = .87 |
| Weight (lbs) | 187.1±44.1 | 188.5±45.2 | 171.9±39.4 | 195.8±44.0 | F, df2, 200 = 5.32, P = .006* |
| Never used ERT† | 31% | 20% | 46% | 28% | χ2, df2 = 9.64, P = .008 |
| Current ERT‡ | 36% | 52% | 25% | 31% | χ2, df2 = 11.08, P = .004 |
| Rheumatoid arthritis§ | 2.5% | 0.0% | 7.1% | 1.1% | χ2, df2 = 7.24, P = .03 |
| H/O of minimal fracture | 2.5% | 3.4% | 3.6% | 1.1% | χ2, df2 = 1.14, P = .56 |
| DXA results | |||||
| Normal | 55% | 68% | 52% | 49% | |
| Osteopenia | 34% | 24% | 36% | 40% | χ2, df4 = 5.67, P = .22 |
| Osteoporosis | 11% | 8.5% | 12% | 11% | |
| Osteoporosis by site | |||||
| Hip only | 1.0% | 1.7% | 1.8% | 0.0% | |
| Spine only | 7.9% | 3.4% | 7.1% | 11% | χ2, df6 = 7.56, P = .27 |
| Both | 2.0% | 3.4% | 3.6% | 0.0% | |
*
Mean difference between Hispanic and African American was significant ( P = .004).
†
Based on SCORE instrument.
‡
Based on ORAI definition.
§
This value represents the women with RA confirmed by review of the medical record and was the data used to calculate the SCORE value.
AA, African American; DXA, dual-energy x-ray absorptiometry; HIS, Hispanic; NHW, non-Hispanic white, ORAI, osteoporosis risk assessment instrument; SCORE, simple calculated osteoporosis risk estimation.