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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

Category Score Hierarchy of evidence
Randomized 1 Yes—randomized (includes partial)
0 Not randomized
Control 3 Controlled BACI
2 Control
1 Comparator
0 None
Study length 1 Study length greater than or equal to a year
0 Study length less than a year
Replicates 2 Replicate temporal (includes time series) and spatial
1 Replicate temporal or spatial
0 No replicates
Study type 3 Manipulative study
2 Correlative study
1 Monitoring study
0 Sampling study
  1. Adapted from: Pullin and Knight [30].