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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Pectoralis muscle area and mortality in smokers without airflow obstruction
|
|---|---|
| Published in |
Respiratory Research, April 2018
|
| DOI | 10.1186/s12931-018-0771-6 |
| Pubmed ID | |
| Authors |
Alejandro A. Diaz, Carlos H. Martinez, Rola Harmouche, Thomas P. Young, Merry-Lynn McDonald, James C. Ross, Mei Lan Han, Russell Bowler, Barry Make, Elizabeth A. Regan, Edwin K. Silverman, James Crapo, Aladin M. Boriek, Gregory L. Kinney, John E. Hokanson, Raul San Jose Estepar, George R. Washko |
| Abstract |
Low muscle mass is associated with increased mortality in the general population but its prognostic value in at-risk smokers, those without expiratory airflow obstruction, is unknown. We aimed to test the hypothesis that reduced muscle mass is associated with increased mortality in at-risk smokers. Measures of both pectoralis and paravertebral erector spinae muscle cross-sectional area (PMA and PVMA, respectively) as well as emphysema on chest computed tomography (CT) scans were performed in 3705 current and former at-risk smokers (≥10 pack-years) aged 45-80 years enrolled into the COPDGene Study between 2008 and 2013. Vital status was ascertained through death certificate. The association between low muscle mass and mortality was assessed using Cox regression analysis. During a median of 6.5 years of follow-up, 212 (5.7%) at-risk smokers died. At-risk smokers in the lowest (vs. highest) sex-specific quartile of PMA but not PVMA had 84% higher risk of death in adjusted models for demographics, smoking, dyspnea, comorbidities, exercise capacity, lung function, emphysema on CT, and coronary artery calcium content (hazard ratio [HR] 1.85 95% Confidence interval [1.14-3.00] P = 0.01). Results were consistent when the PMA index (PMA/height2) was used instead of quartiles. The association between PMA and death was modified by smoking status (P = 0.04). Current smokers had a significantly increased risk of death (lowest vs. highest PMA quartile, HR 2.25 [1.25-4.03] P = 0.007) while former smokers did not. Low muscle mass as measured on chest CT scans is associated with increased mortality in current smokers without airflow obstruction. NCT00608764. |
X Demographics
The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 33% |
| United Kingdom | 1 | 33% |
| Unknown | 1 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 67% |
| Practitioners (doctors, other healthcare professionals) | 1 | 33% |
Mendeley readers
The data shown below were compiled from readership statistics for 64 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 64 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 9 | 14% |
| Student > Master | 8 | 13% |
| Student > Ph. D. Student | 7 | 11% |
| Student > Bachelor | 4 | 6% |
| Student > Doctoral Student | 3 | 5% |
| Other | 10 | 16% |
| Unknown | 23 | 36% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 19 | 30% |
| Nursing and Health Professions | 6 | 9% |
| Pharmacology, Toxicology and Pharmaceutical Science | 2 | 3% |
| Psychology | 2 | 3% |
| Computer Science | 2 | 3% |
| Other | 5 | 8% |
| Unknown | 28 | 44% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. 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 18 May 2018.
All research outputs
#16,728,456
of 25,382,440 outputs
Outputs from Respiratory Research
#2,055
of 3,062 outputs
Outputs of similar age
#210,411
of 343,274 outputs
Outputs of similar age from Respiratory Research
#44
of 69 outputs
Altmetric has tracked 25,382,440 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 3,062 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 7.9. This one is in the 27th percentile – i.e., 27% 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 343,274 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 35th percentile – i.e., 35% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 69 others from the same source and published within six weeks on either side of this one. This one is in the 30th percentile – i.e., 30% of its contemporaries scored the same or lower than it.