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. 2019 Jan 8;2019(1):CD006404. doi: 10.1002/14651858.CD006404.pub3

Ringwald 1996.

Methods RCT
Duration: 1 year, 1 month: April 1994 to May 1995
Participants Adults (> 15 years) with P falciparum malaria
Number: 96
Inclusion criteria: fever or history of fever within 24 hours
Exclusion criteria: severe/complicated malaria; mixed Plasmodium infection; recent self‐medication; pregnancy
Diagnosis: thin film microscopy of P falciparum (asexual parasite density > 5000/µL blood)
Interventions
  • Pyronaridine: 32 mg/kg in divided doses over 3 days: 16 mg/kg on day 0; 8 mg/kg on days 1 and 2

  • Chloroquine: 25 mg/kg in divided doses over 3 days: 10 mg/kg on days 0 and 1; 5 mg/kg on day 2

Outcomes
  • Adverse events

  • Fever clearance (time from onset of treatment until temp remained below 37.5°C)*

  • Parasite clearance (time until the first negative tick blood smear, with subsequent smears negative)*

  • Early treatment failure*

  • Parasitaemia on day 14*

  • Gametocyte carriage at day 14*

  • In vitro drug susceptibility*


*Not assessed in quantitative synthesis in this review
Notes Location: Cameroon
Setting: dispensary (outpatients)
Malaria endemicity: high
Resistance profile: 57% of isolates chloroquine‐resistant
Source of funding: French Ministere de la Co‐operation (Grant 93A43); pyronaridine was supplied by the Institute of Parasitic Diseases, Chinese Academy of Preventive Medicine, Shangai, China
Follow‐up: 14 days
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Block randomization (blocks of 10); from communication with authors recorded by previous version of this review
Allocation concealment (selection bias) Low risk Central randomization; from communication with authors recorded by previous version of this review
Blinding (performance bias and detection bias) 
 All outcomes Low risk Blinded, but tablets were different and patients treated with chloroquine suffered pruritis; from communication with authors recorded by previous version of this review
Incomplete outcome data (attrition bias) 
 All outcomes Low risk Report lists reasons for attrition and exclusions; unlikely to have differentially influenced liver toxicity outcomes used in this review
Selective reporting (reporting bias) Low risk Trial not prospectively registered, trial protocol not available. However, all outcomes stated in methods reported
Other bias Low risk None identified
Adverse event monitoring (detection bias) 
 Adverse Events Unclear risk Authors do not fully describe method for detection of adverse events. Authors do not give definitions of all adverse events
Incomplete adverse event reporting (reporting bias) 
 Adverse events Unclear risk Authors give brief narrative description of adverse events only. Report does not detail extent of elevation in liver transaminases or the proportions retested at day 14