a negative trendp = 0.079
Furthermore, in an analysis adjusted for sex, age and smoking habits, we observed a negative trend of association between use of Vitamin D and d-ROM (adjusted mean change − 29.7, 95% CI -62.8/+3.4, p = 0.079) and a positive trend with OSi (adjusted mean change + 0.45, 95% CI -0.06/+0.97, p = 0.084).