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Table 1 Frequency of agreement and disagreement between nurse and doctor classification interviews

From: Development and validation of a telephone classification interview for common chronic headache disorders

  Nurses’ classification
Definite chronic migraine Probable chronic migraine Chronic tension type headache Other chronic headache Non-chronic headache Total
Doctors’ classification Definite chronic migraine 28 18 1 3 1 51
Probable chronic migraine 11 13 0 2 2 28
Chronic tension type headache 0 2 1 0 1 4
Other chronic headache 0 0 1 0 0 1
Non-chronic headache 7 8 1 0 7 23
Total 46 41 4 5 11 107
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