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Cohort Profile: The Longitudinal Aging Study Amsterdam
Martijn A. Huisman, Jan L. Poppelaars, M. van der Horst, Aartjan T.F. Beekman, Johannes Brug, T.G. van Tilburg, Dorly J. H. Deeg. International Journal of Epidemiology, 2011-01-06
Topic: Health services, long-term care and technology
As shown in Table 2, attrition in LASA is associated with predictors and outcomes of interest to our research. While it is impossible to give a detailed overview of the results from this programme, some key areas can be highlighted. Moreover, the role of vitamin D has been assessed in relation to other indicators of physical functioning, including factors underlying fractures such as bone mineral density,11 as well as sarcopenia12 and overall physical performance,13 confirming that vitamin D status is implicated in much musculoskeletal morbidity in old age, and identifying threshold levels of vitamin D at which intervention is warranted. Studies on frailty in LASA demonstrated that frailty predicted declines in physical functioning, adjusted for the effect of chronic diseases, and predicted mortality,15 adjusted for the effect of chronic diseases and disability.16 These results indicate that frailty is a relevant geriatric syndrome that captures elements of functioning that other well-known measures of morbidity, including measures of functional limitations or Activities of Daily Living, do not. LASA researchers have investigated potential determinants of loneliness, including but not limited to: self-assessed health, own and spousal disability, residential care, partner status and network size.23,24 Respondents generally became more lonely during follow-up, where the highest increases were observed in the oldest respondents, in those who were initially healthy but experienced declines in health, and in those who had a partner, suggesting that partner relationships might not offer the same kind of protection against loneliness at advanced ages as it does earlier in the life course.23 LASA includes rich information about the family and personal networks of its respondents. It is demonstrated that children’s structural circumstances (e.g. being employed, having young children) are less important in supporting their parents than the process of reciprocal supportive exchanges.24 Results, furthermore, indicate that many complex step-family structures exist, which might have consequences for care in later life.25 The widely varying patterns of losses and gains in personal relationships among the respondents squares with a focus on the heterogeneity of developments among ageing people. Furthermore, the instability of the network composition (e.g. one neighbour is replaced by another neighbour) reflects natural circulation in the membership of networks.26 Higher a
Key findings
- As shown in Table 2, attrition in LASA is associated with predictors and outcomes of interest to our research.
- While it is impossible to give a detailed overview of the results from this programme, some key areas can be highlighted.
- Moreover, the role of vitamin D has been assessed in relation to other indicators of physical functioning, including factors underlying fractures such as bone mineral density,11 as well as sarcopenia12 and overall physical performance,13 confirming that vitamin D status is implicated in much musculoskeletal morbidity in old age, and identifying threshold levels of vitamin D at which intervention is warranted.
- Studies on frailty in LASA demonstrated that frailty predicted declines in physical functioning, adjusted for the effect of chronic diseases, and predicted mortality,15 adjusted for the effect of chronic diseases and disability.16 These results indicate that frailty is a relevant geriatric syndrome that captures elements of functioning that other well-known measures of morbidity, including measures of functional limitations or Activities of Daily Living, do not.
- LASA researchers have investigated potential determinants of loneliness, including but not limited to: self-assessed health, own and spousal disability, residential care, partner status and network size.23,24 Respondents generally became more lonely during follow-up, where the highest increases were observed in the oldest respondents, in those who were initially healthy but experienced declines in health, and in those who had a partner, suggesting that partner relationships might not offer the same kind of protection against loneliness at advanced ages as it does earlier in the life course.23 LASA includes rich information about the family and personal networks of its respondents.
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Study details
- Study designlongitudinal study
- Participants3,805
- Evidence strengthModerate
How this study scored 66/100
Published in a peer-reviewed journal, and it is a longitudinal study following the same people over time. Scored zero for effect reported and randomised / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multi-centre collaboration, so those were left out: it earned 38 of the 58 points we could judge it on, which is 66 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (International Journal of Epidemiology) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 7 / 12 | A longitudinal study following the same people over time |
| Strength of evidence | 3 / 5 | Rated “moderate” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2011 — within 20 year(s) of the newest study here |
| Sample size | 3 / 4 | 3,805 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 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| 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 | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 21216744) |
| Free to read | 2 / 2 | Free to read |
| Points | 38 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 38 of the 58 points we could judge it on is 66 out of 100. |
| Total | 66 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
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Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record names 7 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.
APA 7th
Huisman, M. A., Poppelaars, J. L., van der Horst, M., Beekman, A. T., Brug, J., van Tilburg, T., et al. (2011). Cohort Profile: The Longitudinal Aging Study Amsterdam. International Journal of Epidemiology. https://doi.org/10.1093/ije/dyq219
Vancouver
Huisman MA, Poppelaars JL, van der Horst M, Beekman AT, Brug J, van Tilburg T, et al. Cohort Profile: The Longitudinal Aging Study Amsterdam. International Journal of Epidemiology. 2011. doi:10.1093/ije/dyq219. PMID: 21216744.
BibTeX
@article{huisman2011-21216744,
author = {Huisman, Martijn A. and Poppelaars, Jan L. and van der Horst, M. and Beekman, Aartjan T.F. and Brug, Johannes and van Tilburg, T.G. and Deeg, Dorly J. H.},
title = {{Cohort Profile: The Longitudinal Aging Study Amsterdam}},
journal = {International Journal of Epidemiology},
year = {2011},
doi = {10.1093/ije/dyq219},
pmid = {21216744},
url = {https://doi.org/10.1093/ije/dyq219}
}
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