. Author manuscript; available in PMC: 2016 Oct 1.

Published in final edited form as: J Endometr Pelvic Pain Disord. 2015 Oct 1;7(4):129–135. doi: 10.5301/je.5000224

TABLE I.

Comparison of demographic characteristics between women with endometriosis from the United States (EA) and Puerto Rico (ERP)

Characteristics	EA N = 4,358^a n (%)	ERP N = 878^a n (%)	p-value
Diagnosis^b
Laparoscopy	3,753 (86.1)	765 (87.1)	0.452
Laparotomy	1,066 (24.5)	173 (19.7)	0.002
Age at survey, years^c	36.2 ± 7.4	32.6 ± 8.3	<0.001
Education
1 to 12 grade or High School	350 (7.8)	135 (16.2)	<0.001
Some college	889 (19.8)	272 (32.6)
College Graduate	1,961 (43.7)	291 (34.9)
Post-graduate	1,289 (28.7)	136 (16.3)
Age at onset of first pelvic symptoms
Never had symptoms	29 (0.7)	0 (0)	<0.001
<15 years	1,657 (39.9)	152 (25.0)
15–24 years	1,719 (41.3)	254 (41.9)
25–34 years	625 (15.0)	156 (25.7)
35–44 years	118 (2.8)	43 (7.1)
45+ years	10 (0.3)	2 (0.3)

Percents are based on total number of women per group who responded to each question (excludes blank or non-applicable responses) and may not equal the listed denominator per group.

Women may have reported both types of surgeries as a method of diagnosis; percents are based on total number per group.

Mean ± SD.