Strengths and Difficulties Questionnaire: internal validity and reliability for New Zealand preschoolers.

ABSTRACT:

Objectives

This observational study examines the internal construct validity, internal consistency and cross-informant reliability of the Strengths and Difficulties Questionnaire (SDQ) in a New Zealand preschool population across four ethnicity strata (New Zealand European, Māori, Pasifika, Asian).

Design

Rasch analysis was employed to examine internal validity on a subsample of 1000 children. Internal consistency (n=29 075) and cross-informant reliability (n=17 006) were examined using correlations, intraclass correlation coefficients and Cronbach's alpha on the sample available for such analyses.

Setting and participants

Data were used from a national SDQ database provided by the funder, pertaining to New Zealand domiciled children aged 4 and 5 and scored by their p

SUBMITTER: Kersten P 

PROVIDER: S-EPMC5914702 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature