Skip to main content
. Author manuscript; available in PMC: 2013 Sep 11.
Published in final edited form as: J Minim Invasive Gynecol. 2009 Nov-Dec;16(6):692–699. doi: 10.1016/j.jmig.2009.06.022

Table 5.

Secondary End Points

RFA (n=255)
 TBA (n=200)
Characteristica Before
Treatment		 After
Treatment		 Paired P
Valueb 		Before
Treatment		 After
Treatment		 Paired P
Valueb 		P Valuec
Bleeding or spotting, d 7 (6-10) 0 (0-2) <.001 7 (7-10) 3 (0-5) <.001 .006
Menstrual accidents, No. of patients 107 (42%) 4 (2%) <.001 71 (36%) 10 (5%) <.001 .09
Hemoglobin, g/dL 12.6 (1.4) 13.4 (1.1) <.001 12.0 (1.7) 13.4 (1.3) <.001 .19
Ferritin, mcg/L 20.2 (33.3) 40.3 (32.4) <.001 20.0 (41.9) 37.9 (26.6) <.001 .96

Abbreviations: IQR, interquartile range; RFA, radiofrequency ablation; TBA, thermal balloon ablation.

a

Continuous data are presented as mean (SD) for normally distributed data and as median (IQR) for skewed data. Categorical data are presented as number of patients (percentage of sample).

b

Comparisons within each group were performed by using the paired t test for continuous variables and the McNemar test for categorical variables.

c

Comparisons between the 2 groups were based on the difference in mean values. Continuous variables were compared by using the independent sample t test. Categorical variables were compared by using the Fisher exact test.