Establishing Linguistic Equivalency of the Marathi Translation of the Ages and Stages Questionnaires, Third Edition (ASQ-3).

Objective: This study aims to establish linguistic equivalence of the Marathi translation of the Ages and Stages Questionnaires-Third Edition (ASQ-3) in an urban setting of India.

Methods: All items of the ASQ-3 were translated and back translated by translators from a non-medical background, piloted on 40 families and reviewed by an expert panel. The final version, adjusted for linguistic equivalence, was tested on 111 bilingual parents recruited to complete questionnaires about their children in both English and Marathi.