Internal consistency of the SRQ-20 instrument responses was measured by the Kuder-Richardson Coefficient kr-20.
La consistencia interna de las respuestas al instrumento SRQ-20 se midió por el coeficiente de Kuder-Richardson kr-20.
A consistência interna das respostas ao instrumento SRQ-20 foi medida pelo Coeficiente de Kuder-Richardson kr-20.