2.4.4. Analgesic Use Scores
Analgesic use scores were calculated based on the diary records. These scores were assigned as follows: 0 points for no use of analgesics, 1 point for one use, 2 points for two uses, and 3 points for three uses or more. Values for the seven days from seven days before menstruation to the day before menstruation were categorized as ‘premenstrual’ values, while values for the four days from the first day to the fourth day of menstruation were categorized as ‘menstrual’ values.