Development and psychometric validation of the Brief Intellectual Disability Scale for use in low-health resource, high-burden countries.

Objective: To develop and validate a concise, parent-completed Brief Intellectual Disability Scale (BIDS) for children in low-disability resource and high-disability care burden countries.

Study Design And Setting: In this prospective cross-sectional study of 124 children recruited from a facility for intellectual disability (ID), the newly developed BIDS as the measure for validation as well as for the gold standard and convergent and divergent validities was administered by independent raters. Tests for diagnostic accuracy, reproducibility, and validity were conducted at the item and scale levels.