Objective To explore the association between dietary inflammatory index (DII) and osteoporosis (OP) in patients with hypertension based on the National Health and Nutrition Examination Survey(NHANES)database. Methods Patients with hypertension who participated in the NHANES from 2013-2014 and 2017-2018 were studied. A total of 1667 cases were finally included, and relevant data were collected and analyzed. The patients with hypertension were categorized into DII Q1, DII Q2, DII Q3, and DII Q4 groups based on the quartiles of DII. Logistic regression analysis was used to explore the relationship between DII and OP with trend analysis. Subgroup logistic regression was used to analyze the correlation between DII and OP in patients with hypertension in different genders. Restricted cubic spline plots (RCS) were used to analyze the quantitative and qualitative relationship between DII and OP risk in patients with hypertension. Results The prevalence of OP in patients with hypertension in DII Q1, DII Q2, DII Q3, and DII Q4 groups was 35.49% (148/417), 38.13% (159/417), 42.93% (179/417), and 47.36% (197/416), respectively, with a statistically significant difference (=14.240, P=0.003). After correcting for all confounders, DII was still significantly associated with the risk of OP in patients with hypertension (OR=1.017, 95% CI: 1.005-1.029, P<0.05). Compared to that in the DII Q1 group, the risk of OP in patients with hypertension in the DII Q3 group and DII Q4 group increased by 0.752-fold and 2.261-fold, respectively (P<0.05). After gender stratification, there was a trend of increasing OR for OP risk in the DII Q1, DII Q2, DII Q3, and DII Q4 groups among female patients with hypertension (Pfor trend<0.001). RCS analysis showed a nonlinear association between DII and OP risk in patients with hypertension (P nonlinear=0.014). Conclusion DII is an independent risk factor for OP in hypertensive patients. The higher the DII level is, the higher the risk of OP. |