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Cochrane Database of Systematic Reviews

Fixed-dose combinations of drugs versus single-drug formulations for treating pulmonary tuberculosis

Overview of attention for article published in Cochrane database of systematic reviews, May 2016
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (96th percentile)
  • High Attention Score compared to outputs of the same age and source (86th percentile)

Mentioned by

7 news outlets
1 blog
1 policy source
8 tweeters
4 Facebook pages
2 Wikipedia pages


27 Dimensions

Readers on

229 Mendeley
Fixed-dose combinations of drugs versus single-drug formulations for treating pulmonary tuberculosis
Published in
Cochrane database of systematic reviews, May 2016
DOI 10.1002/14651858.cd009913.pub2
Pubmed ID

Carmen R Gallardo, David Rigau Comas, Angélica Valderrama Rodríguez, Marta Roqué i Figuls, Lucy Anne Parker, Joan Caylà, Xavier Bonfill Cosp


People who are newly diagnosed with pulmonary tuberculosis (TB) typically receive a standard first-line treatment regimen that consists of two months of isoniazid, rifampicin, pyrazinamide, and ethambutol followed by four months of isoniazid and rifampicin. Fixed-dose combinations (FDCs) of these drugs are widely recommended. To compare the efficacy, safety, and acceptability of anti-tuberculosis regimens given as fixed-dose combinations compared to single-drug formulations for treating people with newly diagnosed pulmonary tuberculosis. We searched the Cochrane Infectious Disease Group Specialized Register; the Cochrane Central Register of Controlled Trials (CENTRAL, published in the Cochrane Library, Issue 11 2015); MEDLINE (1966 to 20 November 2015); EMBASE (1980 to 20 November 2015); LILACS (1982 to 20 November 2015); the metaRegister of Controlled Trials; and the World Health Organization International Clinical Trials Registry Platform (WHO ICTRP), without language restrictions, up to 20 November 2015. Randomized controlled trials that compared the use of FDCs with single-drug formulations in adults (aged 15 years or more) newly diagnosed with pulmonary TB. Two review authors independently assessed studies for inclusion, and assessed the risk of bias and extracted data from the included trials. We used risk ratios (RRs) for dichotomous data and mean differences (MDs) for continuous data with 95% confidence intervals (CIs). We attempted to assess the effect of treatment for time-to-event measures with hazard ratios and their 95% CIs. We used the Cochrane 'Risk of bias' assessment tool to determine the risk of bias in included trials. We used the fixed-effect model when there was little heterogeneity and the random-effects model with moderate heterogeneity. We used an I² statistic value of 75% or greater to denote significant heterogeneity, in which case we did not perform a meta-analysis. We assessed the quality of evidence using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. We included 13 randomized controlled trials (RCTs) in the review, which enrolled 5824 participants. Trials were published between 1987 and 2015 and included participants in treatment with newly diagnosed pulmonary TB in countries with high TB prevalence. Only two trials reported the HIV status of included participants.Overall there is little or no difference detected between FDCs and single-drug formulations for most outcomes reported. We did not detect a difference in treatment failure between FDCs compared with single-drug formulations (RR 1.28, 95% CI 0.82 to 2.00; 3606 participants, seven trials, moderate quality evidence). Relapse may be more frequent in people treated with FDCs compared to single-drug formulations, although the confidence interval (CI) includes no difference (RR 1.28, 95% CI 1.00 to 1.64; 3621 participants, 10 trials, low quality evidence). We did not detect any difference in death between fixed-dose and single-drug formulation groups (RR 0.96, 95% CI 0.67 to 1.39; 4800 participants, 11 trials, moderate quality evidence).When we compared FDCs with single-drug formulations we found little or no difference for sputum smear or culture conversion at the end of treatment (RR 0.99, 95% CI 0.96 to 1.02; 2319 participants, seven trials, high quality evidence), for serious adverse events (RR 1.45, 95% CI 0.90 to 2.33; 3388 participants, six trials, moderate quality evidence), and for adverse events that led to discontinuation of therapy (RR 0.96, 95% CI 0.56 to 1.66; 5530 participants, 13 trials, low quality evidence).We conducted a sensitivity analysis excluding studies at high risk of bias and this did not alter the review findings. Fixed-dose combinations and single-drug formulations probably have similar effects for treating people with newly diagnosed pulmonary TB.

Twitter Demographics

The data shown below were collected from the profiles of 8 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 229 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 2 <1%
South Africa 1 <1%
Unknown 226 99%

Demographic breakdown

Readers by professional status Count As %
Student > Master 44 19%
Researcher 32 14%
Student > Bachelor 29 13%
Student > Ph. D. Student 24 10%
Student > Postgraduate 13 6%
Other 35 15%
Unknown 52 23%
Readers by discipline Count As %
Medicine and Dentistry 66 29%
Nursing and Health Professions 36 16%
Pharmacology, Toxicology and Pharmaceutical Science 18 8%
Psychology 7 3%
Social Sciences 7 3%
Other 32 14%
Unknown 63 28%

Attention Score in Context

This research output has an Altmetric Attention Score of 72. 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 20 August 2020.
All research outputs
of 18,702,874 outputs
Outputs from Cochrane database of systematic reviews
of 11,847 outputs
Outputs of similar age
of 274,867 outputs
Outputs of similar age from Cochrane database of systematic reviews
of 188 outputs
Altmetric has tracked 18,702,874 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 11,847 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 26.3. This one has done particularly well, scoring higher than 93% 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 274,867 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 188 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 86% of its contemporaries.