Table 3.

Risk assessment of endometriosis or non-endometriosis subjects with age, corticosteroids, or NSAIDs.

	Endometriosis		Non-Endometriosis		HR	95% C	p-value
	N	No. of AS1	N	No. of AS1
Age (years)
30–39	5,395	20	10,784	35	1.23	0.71–2.13	0.461
40–49	6,500	24	13,025	26	2.01	1.15–3.49	0.014
≥50	1,197	3	2,375	3	2.14	0.43–10.59	0.353
							p for interaction = 0.443
Corticosteroids
No	5,352	22	10,697	28	1.73	0.99–3.03	0.055
Yes	7,740	25	15,487	36	1.47	0.88–2.44	0.142
							p for interaction = 0.538
NSAIDs2
No	2,949	9	5,875	4	4.57	1.41–14.84	0.011
Yes	10,143	38	20,309	60	1.35	0.90–2.03	0.143
							p for interaction = 0.031

¹AS, Ankylosing spondylitis.

²NSAIDs, non-steroidal anti-inflammatory drugs.

The bold values stand for statistical significance.