Table 1.

Definition of bleeding patterns.

Bleeding patterns	Definition
Bleeding	Blood in the vaginal discharge, at least one sanitary pad or tampon is needed
Spotting	Blood in the vaginal discharge, no more than one sanitary pad or tampon is needed
No bleeding	No bleeding or spotting
Intermittent bleeding or spotting	Several days free of bleeding or spotting between days with bleeding or spotting
Amenorrhea	No bleeding or spotting within 90 days of reference period
Oligomenorrhea	Less than 3 times of bleeding or spotting within the 90 days of reference period, but not amenorrhea
Normal frequency	Three to 5 times of bleeding or spotting within the 90 days of reference period
Frequent bleeding	Six or more times of bleeding or spotting within the 90 days of reference period
Prolonged bleeding	Sustained bleeding or spotting for 14 days or more within the 90 days of reference period