Evidence map›Paper›PMID 41204289›Full record

ArticleBMC geriatrics2025

Association between cognitive function and smartphone ownership among Japanese very old adults: a cross-sectional and longitudinal study.

Naoki Takahiro, Yuko Oguma, Hisashi Urushihara, Azusa Hara, Takashi Sasaki, Yukiko Abe, Ryo Shikimoto, Yasumichi Arai

Abstract read
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In one paragraph

Article in BMC geriatrics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Naoki TakahiroCenter for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan.
Yuko OgumaGraduate School of Health Management, Sports Medicine Research Center, Keio University, Keio University, Tokyo, Japan.
Hisashi UrushiharaDivision of Drug Development and Regulatory Science, Faculty of Pharmacy, Keio University, Tokyo, Japan.
Azusa HaraDivision of Drug Development and Regulatory Science, Faculty of Pharmacy, Keio University, Tokyo, Japan.
Takashi SasakiCenter for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan.
Yukiko AbeCenter for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan.
Ryo ShikimotoCenter for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan. shikimoto2006@keio.jp.
Yasumichi AraiCenter for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan.

Funding

Japan Agency for Medical Research and Development (AMED) JP20jm0210051Japan Science and Technology Agency (JST) Research Complex Program JP15667051Ministry of Education, Culture, Sports, Science and Technology (MEXT) Grant-in-Aid for Scientific Research 18H03055Ministry of Education, Culture, Sports, Science and Technology (MEXT) Grant-in-Aid for Scientific Research 24K20224
6 · The paper itself

Abstract

backgroundThis research was conducted to investigate the association between cognitive function and smartphone ownership among very old adults, a rapidly growing age group. Additionally, we conducted a longitudinal investigation as a sub-analysis to determine whether owning a smartphone affects the level of long-term care certification as a proxy outcome for cognitive decline.

methodData from a cross-sectional and longitudinal survey of the Kawasaki Aging and Wellbeing Project (KAWP) was used. Multivariate regression analysis was performed to examine the relationship between the Mini-Mental State Examination (MMSE) score and smartphone ownership. We also examined the association between smartphone ownership and the level of nursing care 1,278 days after the baseline.

resultsAmong 483 participants aged 85-90 years at baseline, 165 (46.9%) were male, and 131 (27.1%) owned a smartphone. In adjusted regression, smartphone ownership was associated with an MMSE score of ≥ 27 (odds ratio [OR]: 1.76, 95% confidence interval [CI]: 1.13-2.77), after controlling for potential confounders, including hypertension (OR: 1.65, 95% CI: 1.01-2.69). The results revealed no relationship between smartphone ownership and long-term care level. DISCUSSION: Our results suggest that minimal cognitive decline in very old adults could make the ownership of a smartphone difficult.

Indexed as

CognitionOwnershipSmartphoneAged, 80 and overCross-Sectional StudiesFemaleHumansJapanLongitudinal StudiesLong-Term CareMaleCognitive functionDigital divideDigital healthDigital literacyLong-term care levelMMSE score

Identifiers

PMID41204289
PMCPMC12595811

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.