Table III.
Pain Reports by Potential Pain Predictors
| No pain reported | Any type of pain reported | Age-adjusted P- value | |
|---|---|---|---|
| Haemoglobin, g/l (n=125) | 0.46 | ||
| Mean ± Standard Deviation | 98 ± 8 | 97 ± 11 | |
| Bone Health | |||
| Spine density z-scores | N=51 | N=30 | 0.009 |
| < −2.5 | 18 (35.3%) | 8 (26.7%) | |
| ≥ −2.5 but < −1.5 | 14 (27.5%) | 8 (26.7%) | |
| ≥ −1.5 | 19 (37.3%) | 14 (46.7%) | |
| Mean ± Standard Deviation | −2.05 ± 1.28 | −1.52 ± 1.57 | |
| Lifetime fractures (n=138) | N=80 | N=58 | 0.83 |
| Mean ± Standard Deviation | 0.69 ± 1.57 | 1.22 ± 1.52 | |
| Fractures in the past year (n=138) | N=80 | N=58 | 0.34 |
| Mean ± Standard Deviation | 0.06 ± 0.33 | 0.16 ± 0.59 | |
| Iron Status | |||
| LIC, mg/g dry weight | N=56 | N=46 | 0.40 |
| ≤ 10 | 32 (57%) | 29 (63%) | |
| >10 – <15 | 7 (13%) | 4 (9%) | |
| ≥ 15 | 17 (30%) | 13 (28%) | |
| Mean ± Standard Deviation | 13.5 ± 15.6 | 10.7 ± 10.3 | |
| Ferritin, μg/l | N=78 | N=56 | 0.50 |
| < 1,000 | 35 (44.9%) | 21 (37.5%) | |
| 1,000 – <3,000 | 29 (37.2%) | 28 (50.0%) | |
| ≥ 3,000 | 14 (17.9%) | 7 (12.5%) | |
| Mean ± Standard Deviation | 1821.2 ± 2095.9 | 1648.9 ± 1402.9 | |
| Cardiac T2*, ms | N=51 | N=43 | 0.87 |
| < 10 | 5 (21.7%) | 4 (22.2%) | |
| 10 – <20 | 11 (47.8%) | 8 (44.4%) | |
| ≥ 20 | 35 (68.6%) | 31 (72.1%) | |
| Mean ± Standard Deviation | 26.7 ± 12.4 | 28.7 ± 11.7 | |
| Chelator | N=80 | N=59 | 0.13 |
| None | 5 (6.3%) | 4 (6.8%) | |
| Deferoxamine | 8 (10.0%) | 15 (25.4%) | |
| Oral | 44 (55.0%) | 22 (37.3%) | |
| Deferoxamine + Oral | 23 (28.8%) | 18 (30.5%) | |
Note: P-values are from a logistic regression predicting any pain (yes/no) as a function of the variable of interest and including age (in years) as a predictor. LIC, liver iron concentration.