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Table 1 Quality assessment of included studies using Newcastle-Ottawa scale

From: Short-term outcomes of on- vs off-pump coronary artery bypass grafting in patients with left ventricular dysfunction: a systematic review and meta-analysis

First author

Year

Selcetion

Comparability

Outcome

Total

S1

S2

S3

S4

C1

C2

O1

O2

O3

 

Arom, K.V.

2000

1

1

0

1

1

0

1

1

1

7

Yokoyama, T.

2000

1

1

0

1

1

0

1

1

1

7

Shennib, H.

2002

1

1

0

1

1

0

1

1

1

7

Al-Ruzzeh, S.

2003

1

1

0

1

1

0

1

1

1

7

Ascione, R.

2003

1

1

0

1

1

1

1

1

1

8

Goldstein, D.J.

2003

1

1

0

1

1

1

1

1

1

7

Darwazah, A.K.

2006

1

1

0

1

1

1

1

1

1

8

Sharoni, E.

2006

1

1

0

1

1

0

1

1

1

7

Filsoufi, F.

2007

1

1

1

1

1

0

1

1

1

8

Youn, Y.N.

2007

1

1

0

1

1

0

1

1

1

7

Qiu, Z.B.

2008

1

1

0

1

1

0

1

1

1

8

Attaran, S.

2010

1

1

0

1

1

0

1

1

1

7

Caputti, G.M.

2011

1

1

0

1

1

0

1

1

1

7

Emmert, M.Y.,

2012

1

1

0

1

1

0

1

1

1

7

Keeling, W.B.

2013

1

1

0

1

1

0

1

1

1

7

Ueki, C.

2016

1

1

0

1

1

0

1

1

1

7

  1. S1: Representativeness of the exposed cohort; S2: Selection of the non-exposed cohort, S3: Ascertainment of exposure, S4: Demonstration that outcome of interest was not present at start of study; C1&2: Comparability of cohorts on the basis of the design or analysis; O1: Assessment of outcome, O2: Was follow-up long enough for outcomes to occur, O3: Adequacy of follow-up of cohorts