Table 1

Baseline characteristics of all included women (N=2151) having first-time surgery for urinary incontinence in Denmark, 1996–2010

Exposed
n=358 (16.6%)
Unexposed
n=1793 (83.4%)
Mean age (±SD), years
 (At time of first UI surgery)60.9 (±12.7)54.5 (±12.6)
Age groups n (%)
 18–3913 (3.6)199 (11.1)
 40–59151 (42.2)956 (53.3)
 60–194 (54.2)638 (35.6)
Procedures n (%)
 rpMUS73 (20.4)602 (33.6)
 toMUS172 (48.0)800 (44.6)
 Bulking101 (28.2)259 (14.4)
 Others12 (3.4)132 (7.4)
 Concomitant prolapse surgery n (%)11 (3.1)67 (3.7)
Symptom-relieving medications n (%)*
 Solifenacin176 (49.2)
 Tolterodine84 (23.5)
 Fesoterodine63 (17.6)
 Trospium chloride32 (8.9)
 Oxybutynin29 (8.1)
 Darifenacin14 (3.9)
 Emepronium6 (1.7)
 Duloxetine6 (1.7)
Oestrogen users n (%)†
 No135 (37.7)1073 (59.8)
 Yes223 (62.3)720 (40.2)
Comorbidity (CCI) n (%)
 0214 (59.8)1298 (72.3)
 1–2107 (29.9)413 (23.0)
 3+37 (10.3)82 (4.6)
Educational level n (%)‡
 Basic178 (51.7)739 (41.8)
 Secondary125 (36.3)645 (36.5)
 Higher41 (11.9)383 (21.7)
Annual income n (%)
 Low (1st quartile)100 (27.9)437 (24.4)
 Middle (2nd–3rd quartile)206 (57.6)871 (48.6)
 High (4th quartile)52 (14.5)485 (27.0)
Year of surgery n (%)
 1996–200650 (14.0)409 (22.8)
 2007–2008118 (33.0)673 (37.5)
 2009–2010190 (53.0)711 (39.7)
  •  *Does not sum up to 100%. Some women redeemed more than one type of the drugs during the time period.

  • †Women with at least one redeemed prescription of oestrogen within 365 preceding surgery.

  • ‡Unknown highest attained educational level: 40 women.

  • CCI, Charlson comorbidity index; rpMUS, retropubic mid-urethral sling; toMUS, transobturator mid-urethral sling; UI, urinary incontinence.