著者

Kiyomasa Nakatsuka Rei Ono Shunsuke Murata Toshihiro Akisue Haruhisa Fukuda

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220310, (Released:2023-03-25)

参考文献数

33

被引用文献数

1

---

Background: We aimed to assess whether the United States-developed Claims-based Frailty Index (CFI) can be implemented in Japanese older adults using claims data.Methods: We used the monthly claims data and certification of long-term care (LTC) insurance data of residents from 12 municipalities from April 2014 to March 2019. The 12 months from first recording was defined as the “baseline period,” and the time thereafter as the “follow-up period”. Participants aged ≥65 years were included, and those with no certified LTC insurance or who died at baseline were excluded. New certification of LTC insurance and all-cause mortality during the follow-up period were defined as outcome events. CFI categorization consisted of three steps including: 1) using 12 months deficit-accumulation approach that assigned different weights to each of the 52 items; 2) the accumulated score to derive the CFI; and 3) categorizing the CFI as “robust” (<0.15), “prefrail” (0.15–0.24), and “frail” (≥0.25). Kaplan–Meier survival curves and Cox proportional hazard models were used to determine the association between CFI and outcomes. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated.Results: There were 519,941 participants in total. After adjusting for covariates, the severe CFI category had a high risk of certification of LTC insurance (prefrail: HR 1.33; 95% CI, 1.27–1.39 and frail: HR 1.60; 95% CI, 1.53–1.68) and all-cause mortality (prefrail: HR 1.44; 95% CI, 1.29–1.60 and frail: HR 1.84; 95% CI, 1.66–2.05).Conclusion: This study suggests that CFI can be implemented in Japanese claims data to predict the certification of LTC insurance and mortality.

著者

Kazuya Tamura Yuya Ueda Takashi Saito Ryo Goto Naoki Yamada Kiyomasa Nakatsuka Kazuaki Uchida Kana Horibe Kenta Saeki Haruhi Encho Masato Tezuka Mao Mukaijo Rei Ono

出版者

The Japanese Society of Physical Fitness and Sports Medicine

雑誌

The Journal of Physical Fitness and Sports Medicine (ISSN:21868131)

巻号頁・発行日

vol.12, no.5, pp.133-139, 2023-09-25 (Released:2023-09-13)

参考文献数

34

---

Outdoor play during childhood is vital for physical, cognitive, and social development. Outdoor play is influenced by friends, though the relationship between outdoor play and the number of close friends is not clear. This study aimed to investigate the association between peer group size and outdoor play among children aged 9–12 years. This study was cross-sectional in design. We recruited fourth- to sixth-grade children from two public elementary schools. Outdoor play contents and duration on weekdays were collected via a questionnaire, and the total duration of outdoor play on five weekdays was calculated. We asked the children to nominate up to 10 of their closest friends. We calculated the peer group size as the total number of reciprocal closest friends for each child. A multivariate linear regression analysis was conducted to investigate the association between peer group size and outdoor play duration, adjusted for gender, grade, school, body mass index, sports club participation, and screen time. This study included 291 children (137 girls, mean age: 10.6 ± 1.0 years). The peer group size was associated with outdoor play duration after adjusting for confounding factors (β: 0.18, 95% CI: 0.07-0.30). This study revealed that children aged 9–12 years, with larger peer group size showed a significantly longer duration of outdoor play.