Background: Copenhagen hip and groin outcome score (HAGOS) is the only valid and reliable self-reported questionnaire for assessing symptoms and activity limitations of subjects with hip and groin problems. The aim of this study was to translate and culturally adapt the English version of the HAGOS to Persian and to evaluate its reliability in young athletes with hip and groin pain. Methods: T...

We study two–level overlapping domain decomposition preconditioners with coarse spaces obtained by smoothed aggregation in iterative solvers for finite element discretisations of second-order elliptic problems. We are particularly interested in the situation where the diffusion coefficient (or the permeability) α is highly variable throughout the domain. Our motivating example is Monte-Carlo si...

BACKGROUND Neck pain is a highly prevalent condition resulting in major disability. Standard scales for measuring disability in patients with neck pain have a pivotal role in research and clinical settings. The Neck Disability Index (NDI) is a valid and reliable tool, designed to measure disability in activities of daily living due to neck pain. The purpose of our study was the translation and ...

Abstract Varying coefficient models are a flexible extension of generic parametric whose coefficients functions set effect-modifying covariates instead fitted constants. They capable achieving higher model complexity while preserving the structure underlying models, hence generating interpretable predictions. In this paper we study use gradient boosted decision trees as those coefficient-decidi...