6.2. Analysis.

Comparison 6 NSAIDs versus progesterone‐releasing intrauterine system (IUS), Outcome 2 MBL and other outcomes (descriptive results).

MBL and other outcomes (descriptive results)
Study	Outcomes	Results (NSAIDs)	Results (LNG IUS)	Significance test	Comment
Reid 2005	Menstrual blood loss (alkaline haematin method): Total menstrual fluid loss: PBAC score:	3 months: Median (range): 94 (29–219) mL 6 months: Median (range): 100 (46–168) mL 3 months: Median (range): 151 (57–280) mL 6 months: Median (range): 157 (76–319) 3 months: Median (range): 161 (77–262) 6 months: Median (range): 159 (50–307)	3 months: Median (range): 12 (0‐240) mL 6 months: Median (range): 5 (0–45) mL 3 months: Median (range): 53 (0–459) mL 6 months: Median (range): 27 (0–156) mL 3 months: Median (range): 49 (0–286) 6 months: Median (range): 25 (0–402)	Wilcoxon rank sum test: P < 0.001 for all comparisons	—