Validation of the Japanese version of the Ford Insomnia Response to Stress Test and the association of sleep reactivity with trait anxiety and insomnia

Shun Nakajima, Isa Okajima, Taeko Sasai, Mina Kobayashi, Naomichi Furudate, Christopher L. Drake, Thomas Roth, Yuichi Inoue

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Objective: Our study was conducted to validate the Japanese version of the Ford Insomnia Response to Stress Test (FIRST-J) and to clarify the association of the measure with trait anxiety and insomnia in healthy subjects and insomnia patients. Methods: We studied 161 healthy subjects and 177 insomnia patients who completed the FIRST-J, Pittsburgh Sleep Quality Index (PSQI), Athens Insomnia Scale (AIS), and State-Trait Anxiety Inventory-Trait (STAI). The healthy subjects and the insomnia patients were classified, respectively, into two groups with high FIRST-J and low FIRST-J scores (divided by the median value of healthy subjects). Results: Cronbach α coefficients of the FIRST-J in the insomnia patients and healthy subjects were 0.89 and 0.87, respectively. Factor analysis revealed that the FIRST-J had a single-factor structure. The FIRST-J score significantly correlated with all other measures in the healthy subjects, though the score only correlated with the score of the STAI in the insomnia patients. The healthy subjects with high FIRST-J scores showed higher scores of the AIS and STAI than those with low FIRST-J scores. Furthermore, insomnia patients had a higher total score of the FIRST-J than the healthy subjects. Conclusions: The FIRST-J is an important tool for assessing vulnerability to insomnia.

Original languageEnglish
Pages (from-to)196-202
Number of pages7
JournalSleep Medicine
Volume15
Issue number2
DOIs
Publication statusPublished - 2014 Feb
Externally publishedYes

Keywords

  • Anxiety
  • Ford insomnia response to stress test
  • Insomnia
  • Scale
  • Sleep reactivity
  • Stress

ASJC Scopus subject areas

  • Medicine(all)

Fingerprint Dive into the research topics of 'Validation of the Japanese version of the Ford Insomnia Response to Stress Test and the association of sleep reactivity with trait anxiety and insomnia'. Together they form a unique fingerprint.

  • Cite this