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Table 3 Pearson product-moment correlation coefficients between different measured variables

From: Cardiac output in idiopathic normal pressure hydrocephalus: association with arterial blood pressure and intracranial pressure wave amplitudes and outcome of shunt surgery

Patient number

Number of 6s recordings

CO/MWAABP

CO/MWAICP

MWAABP/MWAICP

Management group

Outcome Category

1

3,370

0.55c

-0.11c

0.09c

B

C

2

12,388

0.54c

-0.12c

-0.22c

A

NR

3

4,776

0.08c

0.08c

0.32c

A

C

4

10,627

0.31c

0.09c

0.01

A

R

5

6,562

0.66c

-0.18c

-0.22c

A

R

6

7,627

0.52c

-0.24c

-0.29c

A

R

7

6,081

0.25c

-0.18c

-0.14c

A

R

8

8,501

0.87c

0.23c

0.23c

B

NR

9

8,172

0.85c

0.37c

0.35c

B

NR

10

1,022

0.25c

-0.003

0.14c

A

R

11

10,715

0.63c

0.18c

0.26c

A

R

12

4,519

0.60c

-0.08c

0.003

B

C

13

6,089

0.80c

-0.04a

0.04a

A

R

14

8,518

0.12c

-0.19c

0.23c

A

NR

15

8,202

0.59c

-0.03a

0.05c

A

R

16

7,030

0.14c

-0.05c

0.21c

A

R

17

3,538

0.25c

-0.12c

-0.15c

B

C

18

8,239

0.58c

-0.07c

-0.07c

A

R

19

7,416

0.44c

0.005

0.18c

B

C

20

8,117

0.04c

-0. 08c

0.21c

A

R

21

5,476

0.02

-0.17c

0.18c

A

R

22

8,991

0.09c

0.39c

0.07c

B

C

23

6,441

0.42c

-0.12c

-0.07c

A

R

24

9,478

0.15c

-0.02

0.04c

A

R

25

9,143

0.29c

0.07c

0.24c

B

NR

26

5,291

0.12c

-0.13c

-0.03a

A

NR

27

6,409

0.73c

0.21c

0.23c

A

R

28

6,467

0.61c

0.11c

0.06c

B

C

29

8,311

0.57c

0.15c

0.10c

A

R

Median

7,416

0.44

-0.04

0.07

  

Ranges

1,022 - 12,388

0.02 - 0.87

-0.24 - 0.39

-0.29 - 0.35

  
  1. CO: mean cardiac output; MWAABP: mean arterial blood pressure wave amplitude; MWAICP: mean intracranial pressure wave amplitude. Significance: aP < 0.05; bP < 0.01; cP < 0.001 (Pearson correlation coefficient for each individual patient recording). C: Conservative management; NR: Surgical Non-Responder; R: Responder.