PMID- 38489991
OWN - NLM
STAT- Publisher
LR  - 20240315
IS  - 1760-4788 (Electronic)
IS  - 1279-7707 (Linking)
VI  - 28
IP  - 5
DP  - 2024 Mar 14
TI  - Longitudinal change of intrinsic capacity and associated factors in older Chinese 
      adults: China Health and Retirement Longitudinal Study.
PG  - 100214
LID - S1279-7707(24)00301-4 [pii]
LID - 10.1016/j.jnha.2024.100214 [doi]
AB  - BACKGROUND: Although intrinsic capacity (IC) has been constructed in older 
      populations, whether IC retains the same structure over time has not been 
      formally examined, nor have the factors associated with the changes in IC over 
      time been thoroughly investigated. This study aimed to establish that the 
      structure of IC remains unchanged over time by testing its longitudinal 
      measurement invariance and to investigate factors that influence the longitudinal 
      change of IC over time. METHODS: Data came from 7,271 participants aged 60 and 
      older from the China Health and Retirement Longitudinal Study in 2011 (Wave 1) 
      and 2015 (Wave 3). Bifactor confirmatory factor analysis (CFA) was used to 
      construct IC with its domains, and the longitudinal measurement invariance of IC 
      between Waves was tested. RESULTS: Bifactor CFA fitted the data well at both 
      Waves and showed good construct validity. Partial scalar invariance was supported 
      with non-invariant intercepts for delayed word recall, math, and close vision. 
      Decreases in IC were associated with increasing age, being female (-0.030, 95% 
      CI: -0.045, -0.016), living in rural areas (-0.019, 95% CI: -0.030, -0.009), BMI 
      < 18.5 (-0.019, 95% CI: -0.035, -0.003), and hypertension (-0.012, 95% CI: 
      -0.022, -0.001). Increases in IC were associated with higher education (primary 
      school: 0.012, 95% CI: 0.001, 0.024; lower secondary school: 0.023, 95% CI: 
      0.005, 0.041) and drinking >/=4/week (0.019, 95% CI: 0.003, 0.034). Stratifying the 
      sample by gender, the protective effect of education was observed only in women. 
      CONCLUSIONS: The bifactor structure of the IC construct was valid and retained 
      its meaning over time. Longitudinal changes in IC were associated with various 
      sociodemographic factors, lifestyle, and health conditions, confirming the need 
      to monitor IC for timely intervention, particularly in those with risk factors 
      for IC decline.
CI  - Copyright (c) 2024. Published by Elsevier Masson SAS.
FAU - Yang, Fang
AU  - Yang F
AD  - College of Public Health, Chongqing Medical University, Chongqing, P.R. China.
FAU - Su, Qin
AU  - Su Q
AD  - College of Public Health, Chongqing Medical University, Chongqing, P.R. China.
FAU - Ran, Qin
AU  - Ran Q
AD  - College of Public Health, Chongqing Medical University, Chongqing, P.R. China.
FAU - Hu, Yaoyue
AU  - Hu Y
AD  - College of Public Health, Chongqing Medical University, Chongqing, P.R. China. 
      Electronic address: yaoyue.hu@cqmu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20240314
PL  - France
TA  - J Nutr Health Aging
JT  - The journal of nutrition, health & aging
JID - 100893366
SB  - IM
OTO - NOTNLM
OT  - Bifactor confirmatory factor analysis
OT  - Intrinsic capacity
OT  - Longitudinal measurement invariance
OT  - Older Chinese adults
OT  - Risk factors
EDAT- 2024/03/16 05:42
MHDA- 2024/03/16 05:42
CRDT- 2024/03/15 19:07
PHST- 2023/10/29 00:00 [received]
PHST- 2024/03/07 00:00 [revised]
PHST- 2024/03/07 00:00 [accepted]
PHST- 2024/03/16 05:42 [medline]
PHST- 2024/03/16 05:42 [pubmed]
PHST- 2024/03/15 19:07 [entrez]
AID - S1279-7707(24)00301-4 [pii]
AID - 10.1016/j.jnha.2024.100214 [doi]
PST - aheadofprint
SO  - J Nutr Health Aging. 2024 Mar 14;28(5):100214. doi: 10.1016/j.jnha.2024.100214.