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Table 3 Quality of studies using the quality assessment of the NIH for cohort and cross-sectional studies

From: Effectiveness of wastewater treatment systems in removing microbial agents: a systematic review

Author/Year/ Ref

Q1

Q2

Q3

Q4

Q5

Q6

Q7

Q8

Q9

Q10

Q11

Q12

Q13

Q14

Hashemi et al., 2010 [28]

NA

NA

NA

NA

Banejad et al., 2010 [29]

NA

NA

NA

NA

Derayat et al., 2011 [30]

NA

NA

NA

NA

Baghapour et al., 2013 [31]

NA

NA

×

NA

NA

Safari et al., 2013 [32]

NA

NA

×

NA

NA

Navidjouy et al., 2014 [33]

NA

NA

×

NA

NA

Karimi et al., 2014 [34]

NA

NA

×

NA

NA

Aslani et al., 2014 [35]

NA

NA

×

NA

NA

Jamshidi et al., 2014 [36]

NA

NA

×

NA

NA

Nahavandi et al., 2015 [37]

NA

NA

×

NA

NA

Ghoreishi et al., 2016 [38]

NA

NA

×

NA

NA

Mollaie Tavani et al., 2017 [39]

NA

NA

×

NA

NA

Sasani et al., 2017 [40]

NA

NA

NA

NA

NA

Choopan et al., 2018 [41]

NA

NA

NA

NA

  1. *Cases that were followed in the articles were marked and those that were not followed were marked×. Items that were not executable were also identified by the word “NA” not applicable