| Title |
Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range
|
|---|---|
| Published in |
BMC Medical Research Methodology, December 2014
|
| DOI | 10.1186/1471-2288-14-135 |
| Pubmed ID | |
| Authors |
Xiang Wan, Wenqian Wang, Jiming Liu, Tiejun Tong |
| Abstract |
In systematic reviews and meta-analysis, researchers often pool the results of the sample mean and standard deviation from a set of similar clinical trials. A number of the trials, however, reported the study using the median, the minimum and maximum values, and/or the first and third quartiles. Hence, in order to combine results, one may have to estimate the sample mean and standard deviation for such trials. |
X Demographics
The data shown below were collected from the profiles of 21 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Australia | 1 | 5% |
| United Kingdom | 1 | 5% |
| Saudi Arabia | 1 | 5% |
| United States | 1 | 5% |
| India | 1 | 5% |
| Denmark | 1 | 5% |
| Switzerland | 1 | 5% |
| Venezuela, Bolivarian Republic of | 1 | 5% |
| Unknown | 13 | 62% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 14 | 67% |
| Scientists | 4 | 19% |
| Practitioners (doctors, other healthcare professionals) | 3 | 14% |
Mendeley readers
The data shown below were compiled from readership statistics for 2,320 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Malaysia | 1 | <1% |
| Israel | 1 | <1% |
| United Kingdom | 1 | <1% |
| Peru | 1 | <1% |
| Belgium | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 2314 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 278 | 12% |
| Researcher | 263 | 11% |
| Student > Ph. D. Student | 250 | 11% |
| Student > Bachelor | 240 | 10% |
| Student > Postgraduate | 135 | 6% |
| Other | 416 | 18% |
| Unknown | 738 | 32% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 655 | 28% |
| Nursing and Health Professions | 99 | 4% |
| Agricultural and Biological Sciences | 83 | 4% |
| Engineering | 79 | 3% |
| Biochemistry, Genetics and Molecular Biology | 72 | 3% |
| Other | 452 | 19% |
| Unknown | 880 | 38% |
Attention Score in Context
This research output has an Altmetric Attention Score of 51. 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 23 March 2024.
All research outputs
#836,432
of 25,837,817 outputs
Outputs from BMC Medical Research Methodology
#71
of 2,318 outputs
Outputs of similar age
#10,505
of 365,943 outputs
Outputs of similar age from BMC Medical Research Methodology
#2
of 25 outputs
Altmetric has tracked 25,837,817 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 96th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,318 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 10.7. This one has done particularly well, scoring higher than 96% of its peers.
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 365,943 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 96% of its contemporaries.
We're also able to compare this research output to 25 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 92% of its contemporaries.