Primary Dysmenorrhea Incidence

Wilson (n=88)

Sundell (n=460)

Grade

Mean age 15

Age 19

Age 24

0 (none)   9%   28%   33% 1 (mild)   27%   35%   35% 2 (moderate)   41%   23%   22% 3 (severe)   23%   15%   10% Absenteeism*   26%   51%   34%

* Missed classes or work.

Wilson CA et al. J Adolesc Health Care. 1989;10:317-22; Sundell G et al. Br J Obstet Gynaecol. 1990;97:588-94.