Table 2.

Demographic characteristics of the training and validation dataset.

	Training set N (%) = 1126	Validation set N (%) N = 100	P < value
Demographics characteristics
Age (mean ± SD)	29 ± 8	31 ± 5	< 0.001
BMI (body mass index) (mean ± SD)	23.41 ± 4.88	24.3 ± 4.82	< 0.001
Mother/daughter history of endometriosis
Yes	21 (1.9%)	8 (8%)
No	1105 (98.1%)	92 (92%)	0.001
Endometriosis phenotype
Dysmenorrhea/VAS of dysmenorrhea (mean ± SD)	6 ± 3.4	7.3 ± 3	< 0.001
Maximum length of periods (mean ± SD)	6 ± 4	8 ± 4	< 0.001
Abdominal pain outside menstruation
Yes	721 (64.1%)	67 (67%)
No	405 (35.9%)	33 (33%)	0.5527
Pain suggesting sciatica
Yes	427 (37.9%)	53 (53%)	0.003
No	699 (62.1%)	47 (47%)
Pain on sexual intercourse	3.8 ± 3.5	5.1 ± 3.5	< 0.001
Lower back pain outside menstruation
Yes	693 (61.5)%	79 (79%)	0.00053
No	433 (38.5)%	21 (21%)
Painful defecation (mean ± SD)	3.2 ± 3.3	4.2 ± 3.3	< 0.001
Alternating diarrhea/constipation during menstruation
Yes	718 (63.7%)	80 (80%)
No	408 (36.3%)	20 (20%)	0.0010
Urinary pain during menstruation (mean ± SD)	1.4 ± 2.5	1.9 ± 2.9	< 0.001
Blood in the stools during menstruation
Yes	179 (15.9%)	20 (20%)	0.2862
No	947 (84.1%)	80 (80%)
Blood in urine during menstruation
Yes	150 (13.3%)	17 (17%)	0.3040
No	976 (86.7%)	83 (83%)
Quality of life
Absenteeism duration in the last 6 months (mean ± SD)	7 ± 22	23 ± 31	< 0.001
Number of non-hormonal pain treatments used (mean ± SD)	1 ± 1	2 ± 2	< 0.001