Humans 2 Selection Bias human 2 selection bias 2 Adolescent 1 Adult 1 Aged 1 Article 1 Bayes Theorem 1 Bayes theorem 1 Bias 1 COVID-19 1 Child 1 China 1 Clinical Competence 1 Female 1 Go/No Go decision 1 Male 1 Malocclusion 1 Middle Aged 1 Observer Variation 1 Orthodontics, Corrective 1 Peer Review, Health Care 1 Random Allocation 1 Regression Analysis 1 Severity of Illness Index 1 Young Adult 1 adolescent 1 adult 1 aged 1