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. 2012 Oct 17;2012(10):CD001405. doi: 10.1002/14651858.CD001405.pub3

Henalla 1989 L.

Methods RCT, duration of study: 3/12, follow up at 3/12 and 9/12
Participants 100 women; 
 Inclusion criteria: urodynamically proven GSI 
 Exclusion criteria: complicated history of incontinence such as fistula or more than one previous incontinence surgery, major prolapse, absolute contraindication to oestrogen treatment
Interventions Group A (n=24): conjugated equine oestrogen vaginal cream (Premarin) 1.25 mg at night for 12/52 
 Group B (n=25): no treatment
Outcomes Pad test, urethral pressure studies at 3/12, symptom questionnaire at 9/12 
 Definition of cure: negative pad test after previous positive; improvement: more than 50% reduction in pad weights
Notes Numbers given as "cured or improved" and "unchanged"; recurrences of symptoms at 9/12 in women who had initially improved: group A: 3, group B: 1, group C: 3 (recurrence of symptoms immediately after discontinuing oestrogen treatment)
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk "allocated at random"
Allocation concealment (selection bias) Unclear risk no description
Blinding (performance bias and detection bias) 
 All outcomes High risk Not possible, drug compared to PFMT
Incomplete outcome data (attrition bias) 
 All outcomes Unclear risk 100 out of 104 evaluated no info on dropouts