Parameter | Vitamin D < 30 mg/ml (n = 499) | Vitamin D ≥ 30 mg/ml (n = 203) | P value | |
---|---|---|---|---|
Age in years (Mean ± SD) | 27.22 ± 10.6 | 30.81 ± 10.4 | < 0.001* | |
Females (%) | 465 (93.19%) | 188 (92.61%) | 0.449 | |
Geographical location | North | 240 | 64 | < 0.001* |
South | 259 | 139 | ||
Socioeconomic status (n = 609) | Lower class | 61/437 | 34/172 | 0.066 |
Upper Lower | 141/437 | 66/172 | ||
Lower middle | 140/437 | 44/172 | ||
Upper middle | 88/437 | 28/172 | ||
Upper class | 7/437 | 0/172 | ||
Duration of SLE in months Median (IQR) | 12 (19) | 11.5 (19) | 0.682 | |
BMI (mean ± SD) | 20.27 ± 4.53 | 21.1 ± 4.77 | 0.124 | |
SLEDAI 2K at baseline, median (IQR) | 12 (11) | 12.5 (10) | 0.373 | |
SLEDAI 2K > 4 (n, %) | 352 (70.54%) | 132 (65.02%) | 0.113 | |
C3 mg/dl Median (IQR) | 56 (49.7) | 61.8 (65.1) | 0.180 | |
Low C3, n (%) | 321 (64.33%) | 126 (62.07%) | 0.551 | |
C4 mg/dl Median (IQR) | 10 (9.65) | 10.4 (9.79) | 0.260 | |
Low C4, n (%) | 230 (46.1%) | 87 (42.86%) | 0.44 | |
Low complements (C3/ C4) | 353 (70.74%) | 137 (67.49%) | 0.395 | |
Anti-dsDNA (IU/ml) median (IQR) | 300 (670) | 314.15 (719) | 0.326 | |
Positive anti-dsDNA, n (%) | 336 (67.33%) | 132 (65.02%) | 0.589 | |
CXCL-10 pg/ml, median (IQR) (n = 474) | 162.51 (263.22) | 145.1 (242.57) | 0.146 | |
Galectin 9 ng/ml, median (IQR) (n—548) | 11.80 (11.66) | 14.97 (25.13) | 0.525 | |
Renal, n (%) | 209 (41.88%) | 74 (36.45%) | 0.177 | |
CNS, n (%) | 85 (17.03%) | 28 (13.79%) | 0.289 | |
Mucocutaneous, n (%) | 445 (89.18%) | 190 (93.60%) | 0.071 |