Table 2.
Comparison of Trabecular Bone Measurements of the Gambian and Cambridge Young Women at 4% Tibia
| Gambian (n = 38) |
Cambridge (n = 38) |
% Diffa | % Diff adjb | Significant predictors | |||
|---|---|---|---|---|---|---|---|
| Median | Interquartile range | Median | Interquartile range | ||||
| Tot BMC (mg/mm) | 252.5 | 227.5–281.0 | 293.1 | 266.8–329.2 | −15.4∗∗∗ | −5.8 | Wt∗∗∗ |
| Tot CSA (mm2) | 898.1 | 854.0–981.3 | 1032.6 | 963.3–1106.5 | −13.4∗∗∗ | −3.4 | Ht∗∗∗ |
| Tot BMD (mg/cm3) | 281.3 | 258.5–309.5 | 292.5 | 268.9–306.2 | −2.0 | −2.4 | −Ht∗, wt∗∗ |
| Trab BMD (mg/cm3) | 184.6 | 174.2–200.3 | 230.9 | 198.9–255.0 | −19.0∗∗∗ | −20.5∗∗∗ | Wt∗∗ |
| Cortsub Cort BMD (mg/cm3) | 358.7 | 327.4–393.2 | 339.7 | 320.5–361.1 | 6.1∗ | 6.3 | −Ht∗, wt∗∗ |
Significant predictors of group differences are shown (− indicates a negative predictor).
Significance of results: ∗p < 0.05; ∗∗p < 0.01; ∗∗∗p < 0.001.
Abbr: Tot BMC, total bone mineral content; Tot CSA, total tibia cross-sectional area; Tot BMD, total bone mineral density; Trab BMD, trabecular bone mineral density; Cortsub Cort BMD, cortical + subcortical bone mineral density; Wt, weight; Ht, height.
a
% Diff: percentage difference between groups calculated using linear regression. Positive differences indicate that Gambian values are greater.
b
% Diff adj: percentage difference between groups after adjusting for height, weight, and age.