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Table 4 Table showing the combined mean and pooled SD at rest in the CAD - and CAD + populations respectively as each study included is added

From: Diagnostic accuracy of left ventricular longitudinal function by speckle tracking echocardiography to predict significant coronary artery stenosis. A systematic review

CAD +

CAD -

Study

n (% of total weight)

Cumulative n

Mean GLS, %

SD

Combined mean

Pooled SD

n (% of total weight)

Cumulative n

Mean GLS, %

SD

Combined Mean

Pooled SD

Ng

48 (12 %)

 

−16,3

2,4

  

14 (4 %)

 

−19,1

2,9

  

Ng

25 (6 %)

73

−17,5

2,4

−16,7

2,5

15 (4 %)

29

−19

2,8

−19,0

2,8

Montgo

56 (14 %)

129

−16,8

3,2

−16,7

2,8

67 (18 %)

96

−19,1

3,4

−19,1

3,2

Smedsr

43 (11 %)

172

−17,7

3

−17,0

2,9

43 (11 %)

139

−19,5

2,6

−19,2

3,1

Shimon

69 (17 %)

241

−17,3

2,4

−17,1

2,8

28 (7 %)

167

−20,8

2,3

−19,5

3,0

B-Sørens

107 (27 %)

348

−17,3

2,5

−17,1

2,7

186 (49 %)

353

−18,9

2,6

−19,2

2,8

Sarvari

49 (12 %)

397

−17,3

2,2

−17,2

2,6

28 (7 %)

381

−19,2

2,2

−19,2

2,8

  1. The study by Ng has two lines because it was divided into one validation and one derivation group
  2. Abbreviations: CAD+ coronary artery disease, CAD- no coronary artery disease, SD standard deviation, GLS slobal longitudinal strain
  3. Cumulative n describes the total number of pateints as each study is added on