Figure 2
From: Vitamin D status and its association with season, hospital and sepsis mortality in critical illness
Seasonal cutoff levels and mean 25(OH) D values for month-specific tertiles. The highest mean value was observed in August (n = 75, 28.0 ± 13.9 ng/ml). This was significantly and almost two-fold higher than the lowest mean level found in March (n = 90, 15.4 ± 8.4 ng/ml, P <0.001), October (n = 16, 15.3 ± 4.9 ng/ml, P <0.001) and November (n = 23, 14.8 ± 9.0 ng/ml, P <0.001). 25(OH) D, 25-hydroxyvitamin D.