Kim 2002

Methods	Study design: controlled interrupted time series Study location: Banwol, Suwon City, Gyeonggi Province, Korea Study dates: June to October 1989 Transmission intensity: not specified Malaria parasite species: not specified Primary vectors: An. sinensis Breeding sites: rice fields Baseline data: none
Participants	Not applicable
Interventions	Fish species: T. m. niloticus (herbivorous) with either A. latipes or Aphyocypris chinensis Indigenous fish species used: yes, except for T. m. niloticus Fish source: A. latipes: not stated; A. chinensis: holding ponds at Ansan rice fields, 2.5 km north; T. m. niloticus: fish farm at Gwagiu, Gyeonggi Populated sites: six rice fields (three control sites, three experimental sites 500 m2, 300 m2, or 600 m2 in size) Restocked: no Co-interventions: none
Outcomes	Average number and percentage of reduction An. sinensis Method: larval dips using 500 mL dipper, two to four replicates per rice field
Source of funding	Not stated
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Study design	High risk	Controlled interrupted time series study
Site selection	Unclear risk	"A confined field plot of ca. 20,000 m2 rice field located in Banwol near Suwon City, Gyeonggi Province....three of the six paddies were taken"
Site allocation	Unclear risk	Unclear how treatment for each site was chosen for ponds
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Unclear whether assessors were blinded to treatment
Baseline values	Low risk	Average number of An. sinensis larvae comparable at experimental and control sites
Number of sites	High risk	Probably inadequate number of sites