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Basic Scale on Insomnia symptoms and Quality of Sleep (BaSIQS)

Title of the Portuguese Version

Escala Básica de Sintomas de Insónia e Qualidade do Sono

Portuguese Version

Gomes, A. A., Tavares, J., & Azevedo, M. H. P. (2001, 2015)

General Description

BaSIQS is a brief self-report seven-item scale to screen for the continuum of nighttime insomnia complaints/perceived sleep quality (from good/very good to poor/very poor quality of sleep). It consists of seven items covering difficulties with sleep onset and maintenance, as well as subjective assessment of overall quality and depth of sleep, in the past month. Each item is rated on a 5-point Likert scale from 0 to 4, except for the last two items, which are reversed. The total result is obtained by summing the individual items and may range from 0 to 28, with higher scores equating to poorer sleep. BaSIQS has been validated in a variety of samples – higher education students (Gomes et al., 2015), young, middle-aged (Mendes, 2017) and older adults (Silva et al., 2016).


Note: Registered at the Portuguese IGAC, registration nr 5929 /2015.

  • Gomes, A. A., Marques, D. R., Meia-Via, A. M., Meia-Via, M., Tavares, J., Silva, C. F., & Azevedo, M. H. P. (2015). Basic Scale on Insomnia complaints and Quality of Sleep (BaSIQS): Reliability, validity, and normative scores in higher education students.Chronobiology International, 32, 428-440. doi:10.3109/07420528.2014.986681 http://hdl.handle.net/10316/47042


Ana Allen Gomes – a.allen.gomes@fpce.uc.pt