Table 1.

Sociodemographic distribution of all survey participants, the total Korean population, and of cases identified as having chronic daily headache (CDH)

^*Adjusted prevalence with weighted value, ^†Comparison of distributions of gender, age group, size of residential area, and educational level between the sample of the present study and the total population of Korea, ^‡-^¶Comparison of adjusted CDH prevalence among the different ^‡genders, ^§age groups, ^∥sizes of residential area, and ^¶educational levels.

CI: confidence interval.