Devising and validating a headache diary in a series of patients with chronic daily headache from Colombia

AUTOR(ES)

Torres, Gabriel F, Otálvaro, Martha I., Vargas, Juan C., Castellanos, Yulexi, García, Jeimy Xiomara, Triana, Javier D., Forero, Cesar A., Guevara, Carlos D., Pardo, Rodrigo

FONTE

Arquivos de Neuro-Psiquiatria

DATA DE PUBLICAÇÃO

2012-01

RESUMO

OBJECTIVE: To devise and test the reliability and validity of a brief headache diary in a series of Colombian patients with chronic daily headache. METHODS: The study was designed in five stages: selection of domains (group of patients and experts); initial devising of the items (writing group); identification of non-understandable items (n=20); assessment of internal consistency (n=100); assessment of validity and assessment of sensitivity to change during seven consecutive days (n=25, 175 observations). RESULTS: Five domains were selected: headache presence, severity and length of pain, analgesics intake, and missing workdays. The headache diary is internally consistent (≈75% of rotated variance), correlates with the medical interview (Spearman's rho and Kendall's tau over 0.8 for each domain) and it has an adequate and stable sensitivity and specificity (82 to 96%). CONCLUSIONS: This headache diary is a reliable and valid instrument and represents the most important features affecting Colombian patients with chronic daily headache.

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