| Age at time of DXA (years), mean (SD) |
11.34 (2.42) |
11.32 (2.72) |
0.98† |
10.62 (2.67) |
11.38 (2.05) |
0.28† |
| Disease duration (months), median (IQR) |
13.5 (7–21) |
17 (8.5–32.5) |
0.39‡ |
26 (22–37) |
40.5 (20.5–53.5) |
0.31‡ |
| Weight for age z score, mean (SD) |
1.05 (1.64) |
–0.12 (1.78) |
0.014†* |
0.92 (1.98) |
0.16 (1.56) |
0.15† |
| Height for age z score, mean (SD) |
–0.58 (1.46) |
–1.00 (1.01) |
0.24† |
–0.58 (1.07) |
–0.92 (1.19) |
0.32† |
| SLEDAI score at DXA, mean (SD) |
5.21 (5.73) |
6.29 (4.94) |
0.48† |
4.25 (2.90) |
5.89 (4.24) |
0.25† |
| C3 level, mean (SD) |
89.31 (29.30) |
88.11 (36.16) |
0.89† |
93.40 (21.10) |
99.31 (28.10) |
0.40† |
| Vitamin D level, median (IQR) |
20 (8–29) |
30.50 (13.5–60) |
0.26‡ |
24.5 (19.6–33.1) |
20.1 (13.3–29.2) |
0.41‡ |
| Cumulative corticosteroid dose (g), mean (SD) |
11.70 (7.00) |
17.38 (13.58) |
0.10† |
15.91 (6.19) |
23.65 (14.62) |
0.059† |
| Immunosuppressant, n (%) |
25 (69.4) |
17 (70.8) |
0.53§ |
18 (78.3) |
23 (82.1) |
0.73§ |
| Vitamin D supplement, n (%) |
17 (47.2) |
10 (41.7) |
0.53§ |
13 (56.5) |
20 (71.4) |
0.61§ |
| Calcium supplement, n (%) |
19 (52.8) |
7 (29.2) |
0.16§ |
18 (78.3) |
17 (60.7) |
0.64§ |
, 
