It is believed that 80%-90% of women with a normal anatomical structure of the genitourinary tract will experience an acute urinary tract infection at least once in their lifetime, while 1%-2% of women suffer from this condition once a month.

Factors that favour urinary tract infections in women in the 15-50 age group are:

• sexual intercourse;
• contraception;
• spermicidal substances;
• antimicrobial substances;
• urinary tract infections;
• history of urinary tract infections or during childhood;
• lack of blood group antigens.

In women between 50 and 70 years, factors include:

• lack of estragens; lack of
• surgical treatment in the urinary tract;
• urinary incontinence;
• bladder hernia;
• lack of blood group antigens;
• urinary tract infections.

After the age of 70, the following are mentioned:

• catheterisation;
• urinary incontinence;
• urinary tract surgical treatment.
  

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Risk factors in postmenopausal women are mainly:

• urinary incontinence;
• bladder hernia;
• urinary incontinence.