Yasuhiko Baba

Publications (1)0.94 Total impact

• Article: Validity and reliability assessment of a Japanese version of the Snaith-Hamilton pleasure scale.

  Hiroshi Nagayama, Shin-ichiro Kubo, Taku Hatano, Shinsuke Hamada, Tetsuya Maeda, Takafumi Hasegawa, Taro Kadowaki, Hiroo Terashi, Masayuki Yoshioka, Nobuatsu Nomoto, Osamu Kano, Manabu Inoue, Hideki Shimura, Tatsuya Takahashi, Tsuyoshi Uchiyama, Hirohisa Watanabe, Satoshi Kaneko, Tetsuya Takahashi, Yasuhiko Baba
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  ABSTRACT: Anhedonia is one of the main non-motor symptoms in Parkinson's disease (PD); it is assessed using the Snaith-Hamilton pleasure scale (SHAPS). To assess anhedonia in the Japanese population, we prepared a Japanese language version of SHAPS (SHAPS-J), and evaluated its validity and reliability in 8 neurological centers. Seventy subjects (48 patients with PD and 22 healthy subjects) were enrolled in this study. The validity of the test was assessed by the correlation between SHAPS-J and the apathy scale, based on the fact that anhedonia is considered a symptom of apathy syndrome. Test-retest reliability and internal consistency were assessed by Cohen's kappa and Cronbach's alpha coefficients, respectively. In the evaluation of validity, the total scores obtained on SHAPS-J during the test and retest significantly correlated with scores on Item 4 in Part 1 of the unified Parkinson's disease rating scale (p<0.0008 and p<0.0036, respectively). Cohen's kappa coefficient was >0.3 on all items (p<0.0005 on all items). Cronbach's alpha coefficient was 0.90 at the baseline and 0.88 at the retest. These results indicate that SHAPS-J has good validity, test-retest reliability, and internal consistency, thus establishing an available measure of anhedonia in Japanese.
  Internal Medicine 01/2012; 51(8):865-9. · 0.94 Impact Factor