Bone density measured by T scores in psoriatic arthritis (PsA) and rheumatoid arthritis (RA) in unmatched and matched cohorts for age, gender, duration of disease, smoking status, and body mass index, after adjusting for prednisone and estrogen use. Values are percentages.
| Areas Measured | Unmatched Cohorts | Matched Cohorts | ||||
|---|---|---|---|---|---|---|
| PsA | RA | p | PsA | RA | p | |
| Lumbar spine | −0.37 (1.52), n = 530 | −0.76 (1.52), n = 7166 | < 0.001 | −0.36 (1.53), n = 457 | −0.54 (1.56), n = 457 | 0.182 |
| Femoral neck | −0.91 (1.21), n = 336 | −1.25 (1.28), n = 4096 | < 0.001 | −0.93 (1.21), n = 273 | −0.88 (1.28), n = 273 | 0.388 |