Table 3.
Association (odds ratio) for D3Cr Muscle Mass/wgt or DXA ALM/ht2 with Prevalent and Incident Mobility Limitations or Incident Injurious Falls, with Adjustment by Percent Fat
| D3Cr Muscle Mass/wgt | ||||||
|---|---|---|---|---|---|---|
| Incident Injurious fall | Prevalent Mobility Limitation | Incident Mobility Limitation* | ||||
| Age-adjusted | + % fat | Age-adjusted | + % fat | Age-adjusted | + % fat | |
| Quartile 1 D3Cr muscle mass/wgt (low) | 2.7 (1.5, 4.7) | 4.1 (2.1, 7.9) | 9.8 (6.1, 15.7) | 7.8 (4.5, 13.5) | 2.7 (1.8, 4.0) | 2.0 (1.2, 3.1) |
| Quartile 2 D3Cr muscle mass/wgt | 1.4 (0.8, 2.6) | 1.9 (1.0, 3.7) | 3.3 (2.0, 5.4) | 2.9 (1.7, 4.8) | 1.9 (1.3, 2.8) | 1.6 (1.0, 2.4) |
| Quartile 3 D3Cr muscle mass/wgt | 2.0 (1.1, 3.5) | 2.3 (1. 35, 4.1) | 2.0 (1.2, 3.3) | 1.8 (1.0, 3.0) | 1.3 (0.9, 1.9) | 1.1 (0. 85, 1.7) |
| Quartile 4 D3Cr muscle mass/wgt (high) | 1.00 referent | 1.00 referent | 1.00 referent | 1.00 referent | 1.00 referent | 1.00 referent |
| p trend | .003 | <.001 | <.001 | <.001 | <.001 | <.001 |
| ALM/ht2 | ||||||
| Incident Injurious fall | Prevalent Mobility limitation | Incident Mobility Limitation | ||||
| Age-adjusted | + % fat | Age-adjusted | + % fat | Age-adjusted | + % fat | |
| Quartile 1 ALM/ht2 (low) | 1.0 (0.6, 1.8) | 1.0 (0.6, 1.8) | 0.5 (0.4, 0.7) | 0.5 (0.3, 0.7) | 0.8 (0.5, 1.1) | 0.7 (0.5, 1.1) |
| Quartile 2 ALM/ht2 | 1.2 (0.7, 2.0) | 1.2 (0.7, 2.0) | 0.6 (0.4, 0.9) | 0.6 (0.4, 0.8) | 0.8 (0.5, 1.1) | 0.8 (0.5, 1.1) |
| Quartile 3 ALM/ht2 | 1.4 (0.8, 2.2) | 1.4 (0.8, 2.2) | 0.7 (0.5, 1.0) | 0.7 (0.5, 1.0) | 0.9 (0.6, 1.3) | 0.9 (0.6, 1.2) |
| Quartile 4 ALM/ht2 (high) | 1.00 referent | 1.00 referent | 1.00 referent | 1.00 referent | 1.00 referent | 1.00 referent |
| p trend | .926 | .926 | <.001 | <.001 | .125 | .093 |
Note: ALM = appendicular lean mass; wgt = weight.
*Because the number of men with follow-up for incident mobility limitation (N = 1,065) is different than for prevalent mobility limitation (N = 1,376) the quartile limits are slightly different. D3Cr muscle mass/wgt Prevalent Quartile cut points: Q1<0.27, Q2 0.27-<0.30, Q3 0.30-<0.34, Q4 ≥ 0.34. D3Cr muscle mass/wgt Incident Quartile cut points: Q1<0.28, Q2 0.28-<0.31, Q3 0.31-<0.35, Q4 ≥ 0.35 ALM/ht2 Prevalent Quartile cut points: Q1<6.93, Q2 6.93-<7.49, Q3 7.49-<8.11, Q4 ≥ 8.11. ALM/ht2 Incident Quartile cut points: <6.93, Q2 6.93-<7.47, Q3 7.47-<8.04., Q4 ≥ 8.04.