Table 3.

Serial vitamin D data (464 measurements among 119 patients)

Characteristic	n (%) or mean (SD)
Number of serial vitamin D measurements per patient	7.5 (4.0)
Time interval between serial vitamin D measurements (years)	0.6 (0.7)
Number of serial vitamin D measurements <40 nmol/L	67/464 (14.4%)
Number of time intervals over which there was a rise in *SLEDAI-2K ≥1	59/266 (22.2%)
Number of visits with *SLEDAI-2K >10	42/464 (9.1%)

*Scores range from 0 to 105, with higher scores indicating more active disease.

SLEDAI-SK, Systemic Lupus Erythematosus Disease Activity Index 2000.