Occurrence of urgency incontinence in different stages of obstructive sleep apnea syndrome. Subgroup analysis of the International Consultation on Incontinence Questionnaire, Short- Form (ISIQ-SF) regarding urgency incontinence in patients with upper airway resistance syndrome (UARS), mild, moderate, and severe obstructive sleep apnea syndrome (OSAS). In patients with severe OSAS, symptoms of urgency incontinence were higher than in the reference group UARS or mild OSAS. An asterisk (*) indicates P < 0.05 vs. UARS and mild OSAS