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[Japanese version of the Neuropsychiatric Inventory--a scoring system for neuropsychiatric disturbance in dementia patients].
Nobutsugu Hirono, Etsuro Mori, Yoshitaka Ikejiri, Toru Imamura, Tatsuo Shimomura, Mamoru Hashimoto, Hikari Yamashita, Manabu Ikeda. No to shinkei = Brain and nerve, 1997-03-01
Topic: Risk, prevention and care in population studies
The MMSE scores ranged from 5 to 29 (mean +/- SD = 19.0 +/- 4.8) and the ADAS scores ranged from 7 to 63 (24.3 +/- 10.9). The CDR score was 0.5 in 17 patients, 1 in 95 patients, 2 in 52 patients, and 3 in 10 patient. Test-retest reliability of each score was acceptably high, and the correlation coefficient for each score obtained by repeated assessments in this study was similar to the coefficient in the original report. Apathy was the most common behavior in the ten abnormal behavioral domains, and euphoria was the least common. The prevalence of abnormal findings was also comparable to the results in the original report. The total NPI scores and many of the NPI subscale scores were significantly correlated with both the severity of dementia and cognitive impairment. This Japanese version of NPI, whose reliability and competency are comparable to those of the original version, is a reliable and useful tool for measuring neuropsychiatric disturbances in dementia patients.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Hirono, N., Mori, E., Ikejiri, Y., Imamura, T., Shimomura, T., Hashimoto, M., et al. (1997). [Japanese version of the Neuropsychiatric Inventory--a scoring system for neuropsychiatric disturbance in dementia patients]. No to shinkei = Brain and nerve.
Vancouver
Hirono N, Mori E, Ikejiri Y, Imamura T, Shimomura T, Hashimoto M, et al. [Japanese version of the Neuropsychiatric Inventory--a scoring system for neuropsychiatric disturbance in dementia patients]. No to shinkei = Brain and nerve. 1997. PMID: 9125732.
BibTeX
@article{hirono1997-9125732,
author = {Hirono, Nobutsugu and Mori, Etsuro and Ikejiri, Yoshitaka and Imamura, Toru and Shimomura, Tatsuo and Hashimoto, Mamoru and Yamashita, Hikari and Ikeda, Manabu},
title = {{[Japanese version of the Neuropsychiatric Inventory--a scoring system for neuropsychiatric disturbance in dementia patients]}},
journal = {No to shinkei = Brain and nerve},
year = {1997},
pmid = {9125732}
}
Built from the record alzhub holds for this paper, not looked up. This record has no DOI, so the citation leaves it out. Volume, issue and page numbers are not held in the record. The record names 8 authors; APA and Vancouver show the first six, BibTeX and the downloads carry all of them. Check the citation against the original before you use it.
Key findings
- The MMSE scores ranged from 5 to 29 (mean +/- SD = 19.0 +/- 4.8) and the ADAS scores ranged from 7 to 63 (24.3 +/- 10.9).
- The CDR score was 0.5 in 17 patients, 1 in 95 patients, 2 in 52 patients, and 3 in 10 patient.
- Test-retest reliability of each score was acceptably high, and the correlation coefficient for each score obtained by repeated assessments in this study was similar to the coefficient in the original report.
- Apathy was the most common behavior in the ten abnormal behavioral domains, and euphoria was the least common.
- The prevalence of abnormal findings was also comparable to the results in the original report.
Why it matters
This Japanese version of the Neuropsychiatric Inventory was tested and found to have reliability and competency comparable to the original version, making it a reliable and useful tool for measuring neuropsychiatric disturbances in dementia patients. Apathy was the most common behavior among the ten abnormal behavioral domains, and total NPI scores correlated significantly with both dementia severity and cognitive impairment.
Study details
- Participants174
- Evidence strengthLow
How this study scored 52/100
Published in a peer-reviewed journal. Scored zero for study design, effect reported and randomised / blinded because the record does not state it. We have no data on journal's citation record, impact for its field and year and institution's track record, so those were left out: it earned 45 of the 87 points we could judge it on, which is 52 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (No to shinkei = Brain and nerve) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 1997 — older than 20 years, still counted |
| Sample size | 2 / 4 | 174 participants |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 7 / 7 | Cited 20,922 times (OpenAlex, 2026-10-10) |
| Citations per year | 5 / 5 | 674.9 citations a year over 31 year(s) since 1997 |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | 0 / 6 | No other study in this library cites it |
| Still being cited | 4 / 4 | Cited 2,037 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 3 / 4 | Last-listed author Manabu Ikeda: h-index 51 (OpenAlex, whole career) |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | 0 / 3 | OpenAlex lists 0 institution(s) in 0 countries — scores zero (affiliation lists can be incomplete) |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 9125732) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 45 / 87 | Scored on 17 of 20 parts. We have no data for the rest, so they are left out: 45 of the 87 points we could judge it on is 52 out of 100. |
| Total | 52 / 100 | — |
What each of these 20 components measures, and what this score is not →
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