Title |
Multiple imputation for estimating hazard ratios and predictive abilities in case-cohort surveys
|
---|---|
Published in |
BMC Medical Research Methodology, March 2012
|
DOI | 10.1186/1471-2288-12-24 |
Pubmed ID | |
Authors |
Helena Marti, Laure Carcaillon, Michel Chavance |
Abstract |
The weighted estimators generally used for analyzing case-cohort studies are not fully efficient and naive estimates of the predictive ability of a model from case-cohort data depend on the subcohort size. However, case-cohort studies represent a special type of incomplete data, and methods for analyzing incomplete data should be appropriate, in particular multiple imputation (MI). |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
Country | Count | As % |
---|---|---|
Spain | 2 | 6% |
Germany | 1 | 3% |
Unknown | 31 | 91% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 10 | 29% |
Student > Ph. D. Student | 6 | 18% |
Student > Master | 5 | 15% |
Student > Doctoral Student | 4 | 12% |
Professor > Associate Professor | 2 | 6% |
Other | 3 | 9% |
Unknown | 4 | 12% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 16 | 47% |
Mathematics | 5 | 15% |
Psychology | 2 | 6% |
Nursing and Health Professions | 2 | 6% |
Pharmacology, Toxicology and Pharmaceutical Science | 1 | 3% |
Other | 3 | 9% |
Unknown | 5 | 15% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 March 2012.
All research outputs
#15,242,707
of 22,663,969 outputs
Outputs from BMC Medical Research Methodology
#1,499
of 2,000 outputs
Outputs of similar age
#100,042
of 156,320 outputs
Outputs of similar age from BMC Medical Research Methodology
#21
of 39 outputs
Altmetric has tracked 22,663,969 research outputs across all sources so far. This one is in the 22nd percentile – i.e., 22% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,000 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 10.2. This one is in the 16th percentile – i.e., 16% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 156,320 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 25th percentile – i.e., 25% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 39 others from the same source and published within six weeks on either side of this one. This one is in the 28th percentile – i.e., 28% of its contemporaries scored the same or lower than it.