Table 4 Comparisons and statistical analysis of the number of complications with the different cannulation techniques

Stenosis

0.61

0.55 to 0.68

0.38

0.32 to 0.46

1.59

1.29 to 1.97

<  0.001

Thrombosis

0.12

0.09 to 0.15

0.10

0.07 to 0.14

1.13

0.73 to 1.77

0.58

Infection

0.06

0.04 to 0.09

0.04

0.02 to 0.07

1.55

0.79 to 3.21

0.18

Bleeding

0.05

0.04 to 0.08

0.02

0.01 to 0.04

2.60

1.12 to 7.03

0.02

Infiltration

0.04

0.02 to 0.06

0.01

0.001 to 0.02

5.96

1.44 to 52.81

0.01

Other

0.48

0.42 to 0.54

0.36

0.3 to 0.43

1.35

1.08 to 1.69

0.01

Cannulation difficulty

0.18

0.14 to 0.22

0.07

0.04 to 0.1

2.57

1.61 to 4.24

<  0.001

Aneurysm

0.03

0.02 to 0.05

0.04

0.02 to 0.07

0.82

0.38 to 1.84

0.59

Stenosis

0.61

0.55 to 0.68

1.14

0.95 to 1.37

0.53

0.43 to 0.66

<  0.001

Thrombosis

0.12

0.09 to 0.15

0.15

0.09 to 0.25

0.75

0.43 to 1.39

0.30

Infection

0.06

0.04 to 0.09

0.06

0.02 to 0.13

1.05

0.43 to 3.06

0.92

Bleeding

0.05

0.04 to 0.08

0.02

0.002 to 0.07

2.84

0.72 to 24.60

0.13

Infiltration

0.04

0.02 to 0.06

0.22

0.14 to 0.33

0.16

0.08 to 0.31

<  0.001

Other

0.48

0.42 to 0.54

0.56

0.42 to 0.72

0.86

0.65 to 1.17

0.31

Cannulation difficulty

0.18

0.14 to 0.22

0.26

0.17 to 0.38

0.68

0.44 to 1.09

0.08

Aneurysm

0.03

0.02 to 0.05

0.08

0.03 to 0.15

0.42

0.17 to 1.12

0.04

Stenosis

0.61

0.55 to 0.68

0.48

0.24 to 0.85

1.29

0.71 to 2.60

0.41

Thrombosis

0.12

0.09 to 0.15

0.17

0.05 to 0.44

0.66

0.25 to 2.52

0.42

Infection

0.06

0.04 to 0.09

0

0 to 0.2

–

0.24

Bleeding

0.05

0.04 to 0.08

0.09

0.01 to 0.31

0.63

0.16 to 5.46

0.53

Infiltration

0.04

0.02 to 0.06

0.35

0.15 to 0.68

0.10

0.04to 0.27

<  0.001

Other

0.48

0.42 to 0.54

0.48

0.24 to 0.85

1.01

0.55 to 2.05

0.98

Cannulation difficulty

0.18

0.14 to 0.22

0.56

0.3 to 0.96

0.31

0.18 to 0.61

<  0.001

Aneurysm

0.03

0.02 to 0.05

0.04

0.001 to 0.24

0.74

0.12 to 30.94

0.77

Stenosis

0.38

0.32 to 0.46

1.14

0.95 to 1.37

0.34

0.26 to 0.44

<  0.001

Thrombosis

0.10

0.07 to 0.14

0.15

0.09 to 0.25

0.66

0.36 to 1.29

0.17

Infection

0.04

0.02 to 0.07

0.06

0.02 to 0.13

0.68

0.24 to 2.17

0.43

Bleeding

0.02

0.01 to 0.04

0.02

0.002 to 0.07

1.09

0.21 to 10.79

0.91

Infiltration

0.01

0.001 to 0.02

0.22

0.14 to 0.33

0.03

0.003 to 0.11

<  0.001

Other

0.36

0.3 to 0.43

0.56

0.42 to 0.72

0.64

0.46 to 0.89

0.01

Cannulation difficulty

0.07

0.04 to 0.1

0.26

0.17 to 0.38

0.27

0.15 to 0.48

<  0.001

Aneurysm

0.04

0.02 to 0.07

0.08

0.03 to 0.15

0.51

0.20 to 1.41

0.12

Stenosis

0.48

0.24 to 0.85

0.38

0.32 to 0.46

1.24

0.60 to 2.29

0.49

Thrombosis

0.17

0.05 to 0.44

0.10

0.07 to 0.14

1.70

0.44 to 4.75

0.31

Infection

0

0 to 0.2

0.04

0.02 to 0.07

0.00

0.00 to 4.73

0.34

Bleeding

0.09

0.01 to 0.31

0.02

0.01 to 0.04

4.12

0.42 to 21.63

0.06

Infiltration

0.35

0.15 to 0.68

0.01

0.001 to 0.02

57.66

11.51 to 557.34

<  0.001

Other

0.48

0.24 to 0.85

0.36

0.3 to 0.43

1.33

0.65 to 2.47

0.36

Cannulation difficulty

0.56

0.3 to 0.96

0.07

0.04 to 0.1

8.15

3.79 to 16.77

<  0.001

Aneurysm

0.04

0.001 to 0.24

0.04

0.02 to 0.07

1.11

0.03 to 7.38

0.92

Stenosis

0.48

0.24 to 0.85

1.14

0.95 to 1.37

0.42

0.20 to 0.77

0.004

Thrombosis

0.17

0.05 to 0.44

0.15

0.09 to 0.25

1.13

0.27 to 3.49

0.83

Infection

0

0 to 0.2

0.06

0.02 to 0.13

0.00

0.00 to 3.83

0.25

Bleeding

0.09

0.01 to 0.31

0.02

0.002 to 0.07

4.50

0.33 to 62.14

0.10

Infiltration

0.35

0.15 to 0.68

0.22

0.14 to 0.33

1.57

0.61 to 3.63

0.27

Other

0.48

0.24 to 0.85

0.56

0.42 to 0.72

0.85

0.40 to 1.64

0.63

Cannulation difficulty

0.56

0.3 to 0.96

0.26

0.17 to 0.38

2.17

1.03 to 4.35

0.02

Aneurysm

0.04

0.001 to 0.24

0.08

0.03 to 0.15

0.56

0.01 to 4.20

0.58