Barely Significant

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In this study, the tumor location (oropharynx versus hypopharynx) was weakly associated with the 2-year local control rate and showed slightly significant difference between the control and failure group, in which oropharyngeal SCC had better chemoradiation response than hypopharyngeal SCC.
The plastid genome has some advantages in relation to the nuclear genome for traceability purposes [30] : i) it is maternally inherited; ii) thousands of copies are present per cell, which is an extremely significant advantage for forensic analyses; iii) it is circular instead of linear, and therefore resistant to exonucleases; iv) organelles have a double membrane that makes chloroplast DNA more resistance to degradation, which is also a significant advantage for forensics; and v) it has a lower mutation rate than nuclear genomic sequences, and its stability may be an advantage for traceability analyses, despite of a low polymorphism level.
Cox proportional hazards models using the periodontally healthy dentate group as the referent population in unadjusted models demonstrate a clear trend and a gradient with increasing periodontal disease severity increasing the hazards ratios (HR) from 1.90 (95% confidence interval: 1.28–2.83) to 2.22 (1.44–3.41) and 4.66 (3.21–6.78) for edentulism.