Using 4+ to grade near-normal muscle strength does not improve agreement

Table 5 Percentage agreement and average deviation analogue

Case	Standard	Modified	Standard..limited.	Modified..limited.
A	66% [0.34]	74% [0.39]	75% [0.49]	74% [0.39]
B	73% [0.34]	66% [0.51]	78% [0.43]	66% [0.51]
C	66% [0.4]	38% [0.69]	85% [0.31]	39% [0.86]
D	51% [0.37]	60% [0.45]	56% [0.88]	61% [0.58]
E	64% [0.35]	48% [0.73]	69% [0.61]	48% [0.73]
ALL	64% [0.34]	48% [0.51]	73% [0.55]	48% [0.78]

The percentage of the most common answer and [average deviation analogue] for each case in the standard and modified MRC groups (limited and not limited to ‘correct’ answers greater than 3). Higher percentages indicate a greater agreement between raters. Higher ada values indicate greater (qualitative) variation

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