The Psychological Inflexibility in Pain Scale (PIPS): Validity and Reliability of the Japanese Version for Chronic Low Back Pain and Knee Pain.
Yasuhiro NagasawaAi ShibataHanako FukamachiKaori IshiiRikard K WicksellKoichiro OkaPublished in: Journal of pain research (2021)
Although a less relevant item was found on each of subscales, the PIPS-J appear to be fairly valid and reliable to evaluate psychological inflexibility in chronic pain among Japanese older adults.