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Table 8 Quality assessment for primary studies

From: Surveillance and security: protecting electricity utilities and other critical infrastructures

Primary study

QA1

QA2

QA3

QA4

QA5

QA6

S1

X

X

   

X

S2

X

X

X

X

  

S3

X

X

  

X

 

S4

X

X

 

X

X

 

S5

X

X

X

X

X

X

S6

X

  

X

  

S7

X

X

 

X

X

 

S8

X

X

X

X

X

 

S9

X

   

X

 

S10

X

X

 

X

X

 

S11

X

  

X

 

X

S12

X

X

 

X

  

S13

X

X

 

X

X

 

S14

X

X

X

 

X

 

S15

X

X

X

X

 

X