Evidence map›Paper›PMID 22403308›Full record

Trial reportThe American journal of tropical medicine and hygiene2012

No evidence for spread of Plasmodium falciparum artemisinin resistance to Savannakhet Province, Southern Laos.

Mayfong Mayxay, Maniphone Khanthavong, Odai Chanthongthip, Mallika Imwong, Sue J Lee, Kasia Stepniewska, Bongkot Soonthornsata, Tiengkham Pongvongsa, Samlane Phompida, Bouasy Hongvanthong and 3 more

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The American journal of tropical medicine and hygiene, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 3 pooled it
3.8field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 3 syntheses or guidelines pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Article
  7. Origin and Spread of Evolving Artemisinin-ResistantThe American journal of tropical medicine and hygiene · 2019
    Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Artesunate treatment of severe pediatric malaria: A review of parasite clearance kinetics and clinical implications.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Mayfong Mayxay
Maniphone Khanthavong
Odai Chanthongthip
Mallika Imwong
Sue J Lee
Kasia Stepniewska
Bongkot Soonthornsata
Tiengkham Pongvongsa
Samlane Phompida
Bouasy Hongvanthong
Pascal Ringwald
Nicholas J White
Paul N Newton

Funding

Wellcome Trust 089275Wellcome Trust 093956
6 · The paper itself

Abstract

We conducted an open-label, randomized clinical trial to assess parasite clearance times (PCT) and the efficacy of 4 mg/kg (group 1, n = 22) and 2 mg/kg (group 2, n = 22) of oral artesunate for three days followed by artemether-lumefantrine in patients with uncomplicated Plasmodium falciparum malaria at Xepon Interdistrict Hospital, Savannakhet Province in southern Laos. Slides were read in duplicate. The overall mean (95% confidence interval; range) PCT in hours was 23.2 (21.2-25.3; 12-46) and 22.4 (20.3-24.5; 12-46) for the first and second microscopists, respectively (P = 0.57). Ten (23%) patients remained parasitemic on day 1 after treatment (4 [18%] in group 1 and 6 [27%] in group 2; P = 0.47). No patient had patent asexual parasitemia on the second and third days of treatment. The 42-day polymerase chain reaction-corrected cure rates were 100% in both treatment groups. Serious adverse events did not develop during or after treatment in any patients. In conclusion, no evidence of P. falciparum in vivo resistance to artesunate was found in southern Laos.

Indexed as

Drug ResistanceAdministration, OralAdolescentAdultAgedAntimalarialsArtemether, Lumefantrine Drug CombinationArtemisininsArtesunateChildDrug CombinationsDrug Therapy, CombinationEthanolaminesFemaleFluorenesFollow-Up StudiesAntimalarialsArtemether, Lumefantrine Drug CombinationartemisininArtemisininsArtesunateDrug CombinationsEthanolaminesFluorenes

Identifiers

PMID22403308
PMCPMC3284353
OpenAlexW2003038055

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.