Table 2 Proportions of diagnostic changes after the 3-month follow-up according to missing criterion of headache subtype at baseline
Missing criterion | No. of cases | Follow-up diagnosis | ||
|---|---|---|---|---|
Probable diagnosis | Definite diagnosis | New diagnosis or headache unspecified | ||
Probable migraine | ||||
Number of attacks | 33 | 23 (69.7) | 8 (24.2) | 2 (6.0) |
Duration of attack | 15 | 13 (86.7) | 2 (13.3) | 0 (0.0) |
Features of headache | 6 | 6 (100.0) | 0 (0.0) | 0 (0.0) |
Accompanying symptoms | 28 | 20 (71.4) | 7 (25.0) | 1 (3.6) |
Characteristics of aura | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Probable TTH | ||||
Number of attacks | 66 | 49 (74.2) | 15 (22.7) | 2 (3.0) |
Duration of attack | 10 | 10 (100.0) | 0 (0.0) | 0 (0.0) |
Features of headache | 8 | 6 (75.0) | 1 (12.5) | 1 (12.5) |
Total headache period | 11 | 5 (45.5) | 6 (54.5) | 0 (0.0) |
Probable TAC | ||||
Number of attacks | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Duration of attack | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Accompanying symptoms | 1 | 0 (0.0) | 0 (0.0) | 1 (100.0)a |
Headache frequency | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Response to treatment | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Headache location | 1 | 0 (0.0) | 1 (100.0) | 0 (0.0) |
Total headache period | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Probable OPHD | ||||
Number of attacks | 7 | 4 (57.1) | 2 (28.6) | 1 (14.3) |
Duration of attack | 2 | 1 (50.0) | 1 (50.0) | 0 (0.0) |
Accompanying symptoms | 1 | 1 (100.0) | 0 (0.0) | 0 (0.0) |
Total headache period | 14 | 13 (92.9) | 0 (0.0) | 1 (7.1) |
Characteristics of nummular headache | 1 | 0 (0.0) | 1 (100.0) | 0 (0.0) |
Headache probably attributed to RCVS | ||||
Cerebral vasoconstriction | 6 | 5 (83.3) | 1 (16.7) | 0 (0.0) |