TY - JOUR
T1 - Validity and Reliability of the Japanese Version of the Dyspnea-12 Questionnaire in Patients With Lung Cancer
AU - Kako, Jun
AU - Kobayashi, Masamitsu
AU - Kajiwara, Kohei
AU - Kimura, Yasutaka
AU - Oosono, Yasufumi
AU - Takegata, Mizuki
AU - Nakano, Kimiko
AU - Matsuda, Yoshinobu
AU - Nakamura, Naomi
AU - Kawashima, Natsuki
AU - Hirano, Yuta
AU - Kitae, Misako
AU - Yamaguchi, Kakuhiro
AU - Iwamoto, Hiroshi
AU - Hattori, Noboru
AU - Sawatari, Hiroyuki
AU - Shiono, Satoshi
AU - Ogino, Hirokazu
AU - Nishioka, Yasuhiko
AU - Amano, Koji
AU - Yorke, Janelle
N1 - Publisher Copyright:
© 2022 American Academy of Hospice and Palliative Medicine
PY - 2022/8
Y1 - 2022/8
N2 - Context: The Dyspnea-12 questionnaire is a simple tool to assess dyspnea using qualitative descriptors that include both physical and emotional domains. However, the reliability and validity of the Japanese version in patients with lung cancer have not been assessed. Objective: To determine the reliability and validity of the Japanese version of the Dyspnea-12 questionnaire in patients with lung cancer. Methods: The assessment was based on the numerical rating scale (NRS), cancer dyspnea scale (CDS), and hospital anxiety and depression scale (HADS). Spearman's correlation assessed the convergent validity of Dyspnea-12 using these three scales. Exploratory factor analysis examined the construct validity. The reliability was verified using Cronbach's alpha. Anxiety, depression, clinical dyspnea, presence of chronic obstructive pulmonary disease (COPD), and patient status were identified by discriminating performance. Results: The analysis included 113 patients with lung cancer. A significant positive correlation was found between Dyspnea-12 and NRS, CDS, and HADS scores. Similar to the original version, factor analysis clearly classified Dyspnea-12 into two components (physical and emotional), thereby confirming its construct validity. Cronbach's alpha values for the total Dyspnea-12 and its physical and emotional components were 0.97, 0.95, and 0.96, respectively. Patients with anxiety, depression, and clinical dyspnea and those in the palliative phase had significantly higher Dyspnea-12 scores than their respective counterparts. The Dyspnea-12 scores of patients with and without COPD were similar. Conclusion: The Japanese version of the Dyspnea-12 questionnaire is a useful and reliable tool to assess the multi-dimensional aspects of dyspnea in patients with lung cancer.
AB - Context: The Dyspnea-12 questionnaire is a simple tool to assess dyspnea using qualitative descriptors that include both physical and emotional domains. However, the reliability and validity of the Japanese version in patients with lung cancer have not been assessed. Objective: To determine the reliability and validity of the Japanese version of the Dyspnea-12 questionnaire in patients with lung cancer. Methods: The assessment was based on the numerical rating scale (NRS), cancer dyspnea scale (CDS), and hospital anxiety and depression scale (HADS). Spearman's correlation assessed the convergent validity of Dyspnea-12 using these three scales. Exploratory factor analysis examined the construct validity. The reliability was verified using Cronbach's alpha. Anxiety, depression, clinical dyspnea, presence of chronic obstructive pulmonary disease (COPD), and patient status were identified by discriminating performance. Results: The analysis included 113 patients with lung cancer. A significant positive correlation was found between Dyspnea-12 and NRS, CDS, and HADS scores. Similar to the original version, factor analysis clearly classified Dyspnea-12 into two components (physical and emotional), thereby confirming its construct validity. Cronbach's alpha values for the total Dyspnea-12 and its physical and emotional components were 0.97, 0.95, and 0.96, respectively. Patients with anxiety, depression, and clinical dyspnea and those in the palliative phase had significantly higher Dyspnea-12 scores than their respective counterparts. The Dyspnea-12 scores of patients with and without COPD were similar. Conclusion: The Japanese version of the Dyspnea-12 questionnaire is a useful and reliable tool to assess the multi-dimensional aspects of dyspnea in patients with lung cancer.
KW - Dyspnea
KW - Lung cancer
KW - Reliability
KW - Scale
KW - Validity
UR - http://www.scopus.com/inward/record.url?scp=85130352388&partnerID=8YFLogxK
U2 - 10.1016/j.jpainsymman.2022.04.171
DO - 10.1016/j.jpainsymman.2022.04.171
M3 - Journal article
C2 - 35452793
AN - SCOPUS:85130352388
SN - 0885-3924
VL - 64
SP - e83-e89
JO - Journal of Pain and Symptom Management
JF - Journal of Pain and Symptom Management
IS - 2
ER -