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Table 3 Scoring system used to assess hierarchy of evidence

From: How effective are on-farm mitigation measures for delivering an improved water environment? A systematic map

CategoryScoreHierarchy of evidence
Randomized1Yes—randomized (includes partial)
0Not randomized
Control3Controlled BACI
2Control
1Comparator
0None
Study length1Study length greater than or equal to a year
0Study length less than a year
Replicates2Replicate temporal (includes time series) and spatial
1Replicate temporal or spatial
0No replicates
Study type3Manipulative study
2Correlative study
1Monitoring study
0Sampling study
  1. Adapted from: Pullin and Knight [30].