Table 3. Comparison of pregnancy outcomes among age groups according to embryo quality
  Positive
pregnancy n(%)
PR Negative
pregnancy n(%)
PR Total
Quality Age group (years)  
  ≤ 35 284 (47)* 1.00 323 (53)* 1.00 607
High 36 a 39 123 (43)† 0.91 162 (57)† 1.07 285
  ≥ 40 75 (34)† 0.72 142 (66)† 1.24 217
 
  ≤ 35 125(31.0)* 1.00 282 (69.0)* 1.00 407
Low 36 a 39 74 (19.0)* 0.61 314 (81.0)* 1.17 388
  ≥ 40 65 (19.4)* 0.62 271 (80.6)* 1.16 336
* P < 0.01    † P < 0.05