UI was determined if the women affirmatively answered
the question about “any kind of involuntary loss of urine”
[9, 13]. Frequency of leakage (1=less than once a month,
2=one or several times a month, 3=one or several times a
week, 4=every day and/or night), amount of leakage each
time (1=drops or little, 2=sometimes enough for changing
underwear, 3=so much that using “pads” is necessary),
and circumstance of leakage (coughing, sneezing,
laughing, on effort/physical exertion, during sexual intercourse,
washing hands, with a sudden and strong urge
to void) [9] were used for categorizing stress, urge, or
mixed UI.