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Table 3 Knowledge about Age-Related Changes in Fertility

From: Knowledge and attitudes regarding elective oocyte cryopreservation in undergraduate and medical students

  Total (n = 169) Undergraduates (n = 74) Medical students (n = 95) p value
Prior knowledge about egg freezing (%)    0.032
 None 20 30 14  
 Some knowledge 64 59 68  
 Moderate knowledge 13 9 16  
 Very knowledgeable 1 0 2  
At what age does fertility significantly decrease? (%)   0.001
 Age 30–35 16 15 15  
 Age 36–40 48 38 62  
 Age 41–45 27 35 16  
 Age 46–50 7 11 4  
What age is too old to have a child naturally? (%)   0.018
 Age 30–35 2 4 0  
 Age 36–40 9 8 9  
 Age 41–45 44 32 48  
 Age 46–50 41 53 32  
Does the fact of increased miscarriage risk with age influence your decision to freeze eggs? (%) 0.72
 Yes 50 51 48  
 No 50 49 51  
Does the increased risk of Down syndrome with age influence your decision to freeze eggs? (%) 0.039
 Yes 54 47 59  
 No 45 51 35  
What is the minimum number of frozen eggs at age 30 likely to result in a live birth? (%) 0.078
 5–10 oocytes 18 11 21  
 11–20 oocytes 38 34 40  
 21–30 oocytes 26 34 19  
 31–40 oocytes 8 9 7  
 40+ oocytes 6 7 5  
What is the minimum number of frozen eggs at age 40 likely to result in a live birth? (%) 0.731
 5–10 oocytes 4 5 7  
 11–20 oocytes 12 9 13  
 21–30 oocytes 30 26 32  
 31–40 oocytes 25 27 22  
 40+ oocytes 25 26 25