The nightmare severity index (NSI): A short new multidimensional tool for assessing nightmares.
Journal of Sleep Research May 1, 2024 Pierre A Geoffroy, Émilie Stern, Julia Maruani et al.
This psychometric pilot study aims to evaluate a new multidimensional simple scale, named the nightmare severity index (NSI) - close to the existing insomnia (ISI) and hypersomnia (HSI) severity indexes. The NSI encompasses all main dimensions of nightmare disorder, evaluating four subdimensions: frequency, emotional impact, diurnal impact, and nocturnal impact of nightmares. The NSI was...