a significant trendp < 0.05
Although the initial SBP and DBP were not reported in the previous studies, we found a significant trend of higher SBP and DBP in the DNID group (152.9 ± 18.3 vs 129.8 ± 25.7; p < 0.05 and 87.9 ± 14.0 vs 68.9 ± 10.9; p < 0.05, respectively) that may be relative risk factors for DNID.