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Table 1 The distribution of patients according to the number of stroke codes registered over the study period (n = 47,845).

From: Potential application of item-response theory to interpretation of medical codes in electronic patient records

Number of stroke codes

N

Percentage

One

36,857

77

Two

8,277

17

Three

2,151

5

Four

446

1

Five

91

< 1

Six

21

< 1

Seven

2

< 1