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40 35 30 25 20 15 10 5 0 Age and the cause of infertility <35 years >35 years ovulatory tubal sperm dysfunction endometriosis unexplained others Maheshwari et al, Hum. Reprod. 2008 Age and the odds of unexplained infertility Age < 30 yrs 30 – 34 yrs 35 – 39 yrs > = 40 yrs *Adjusted for year of diagnosis Adjusted* OR (95% CI) 1 1.5 (1.3, 1.8) 1.8 (1.4, 2.2) 1.2 (0.9, 1.6) Maheshwari et al, Hum. Reprod. 2008 14 PRECONGRESS COURSE 09 I VIENNA, AUSTRIA – 23 JUNE 2019 17