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Table 4 MRC-SS Bland-Altman results from part one (n = 29)

From: A new two-tier strength assessment approach to the diagnosis of weakness in intensive care: an observational study

Testing procedure

MRC-SS mean ± SD

ICU-AW incidence n (%)

   

Assessor 1

Assessor 2

Assessor 1

Assessor 2

P value

Mean diff

LOA (+)

LOA (−)

Isometric six-point

48 ± 9

48 ± 9

12 (41%)

14 (48%)

0.74

−0.27

9.04

8.48

Through range six-point

48 ± 8

45 ± 9

15 (52%)

17 (59%)

0.02

2.55

12.99

7.88

Through range four-point

26 ± 6

26 ± 6

9 (31%)

12 (41%)

0.23

0.48

4.62

3.66

Isometric four-point

27 ± 6

27 ± 6

10 (35%)

10 (35%)

0.85

−0.10

5.43

5.63

  1. MRC-SS, Medical Research Council sum score; SD, standard deviation; ICU-AW, intensive care unit-acquired weakness; n, number; mean diff, mean difference; LOA, limit of agreement; +, positive; −, negative.
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Critical Care

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