Table 1.
Baseline Characteristics in Health ABC Participants With and Without Back and/or Knee pain (n = 212)
| Characteristics (measured concurrent with MRI, unless otherwise noted) Mean, (SD), n (%) | No back/knee pain | Knee pain | Back pain | Back/knee pain |
|---|---|---|---|---|
| n = 63 | n = 40 | n = 46 | N = 63 | |
| Age | 82.8 ± 2.6 | 82.5 ± 2.6 | 82.8 ± 2.5 | 83.0 ± 2.9 |
| Female* | 29 (46.0) | 17 (42.5) | 26 (56.5) | 47 (74.6) |
| White | 51 (63.7) | 25 (51.0) | 44 (69.8) | 51 (53.7) |
| Education < HS | 10 (12.7) | 9 (18.4) | 9 (14.3) | 12 (12.6) |
| Center for Epidemiological Studies–Depression | 6.1 ± 5.8 | 5.1 ± 4.7 | 7.5 ± 5.9 | 7.9 ± 7.2 |
| Diabetes (at time of MRI) | 17 (21.3) | 12 (24.5) | 19 (30.2) | 28 (29.5) |
| Hypertension (at time of MRI) | 43 (68.3) | 25 (62.5) | 33 (71.8) | 48 (87.4) |
| Stroke (at time of MRI) | 6 (7.5) | 3 (6.1) | 2 (3.2) | 10 (10.5) |
| BMI (kg/m2) | 26.6 ± 4.4 | 28.3 ± 4.0 | 27.1 ± 4.5 | 28.2 ± 4.1 |
| Muscle strength | 88.5 ± 34.3 | 86.4 ± 29.8 | 83.6 ± 30.5 | 74.8 ± 24.6 |
| Total # of Medications* | 3.6 ± 2.3 | 4.0 ± 2.5 | 4.9 ± 2.9 | 5.2 ± 3.0 |
| Salicylates | 7 | 1 | 4 | 4 |
| NSAIDs* | 1 | 3 | 5 | 10 |
| Steroids | 1 | 0 | 1 | 0 |
| Other anti-inflammatories | 9 | 3 | 9 | 14 |
| Atrophy index | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 | 0.7 ± 0.0 |
Note: BMI = body mass index; HS = higher secondary; MRI = magnetic resonance imaging; NSAID = nonsteroidal anti-inflammatory medications.
*ANOVA with p value ≤0.05.