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Table 6 The number of data sets for the three different outcomes by interventions

From: What are the relative risks of mortality and injury for fish during downstream passage at hydroelectric dams in temperate regions? A systematic review

 

Injury

Immediate mortality

Delayed mortality

Total

Bypass

4

8

14

26

 General infrastructure

21

4

24

49

Sluiceway

1

3

3

7

 Screen + bypass + penstock

6

0

6

12

 Spillway

4

9

24

37

 Spillway + spillway modification

2

2

9

13

 Turbine

54

121

172

347

 Turbine + screen

0

0

1

1

 Turbine + spillway

0

0

1

1

 Turbine + trash rack

12

15

2

29

Total

104

162

256

522