Age groups (years) | Embryo quality | Day 2 | Day 3 | Day 5 | Total | p-value |
X1: 50 - 59 | Good | 163 | 125 | 63 | 351 | <0.0001a |
Fair | 88 | 62 | 122 | 272 | ||
Poor | 78 | 142 | 144 | 364 | ||
Total | 329 | 329 | 329 | 987 | ||
X2: 60 - 69 | Good | 126 | 87 | 41 | 254 | <0.0001b |
Fair | 81 | 76 | 82 | 239 | ||
Poor | 91 | 135 | 175 | 401 | ||
Total | 298 | 298 | 298 | 894 | ||
X3: ≥70 | Good | 49 | 38 | 13 | 100 | <0.0001c |
Fair | 53 | 40 | 53 | 146 | ||
Poor | 123 | 147 | 159 | 429 | ||
Total | 225 | 225 | 225 | 675 | ||
Control Y: 25 - 35 | Good | 304 | 302 | 288 | 894 | =0.439d |
Fair | 32 | 34 | 46 | 112 | ||
Poor | 14 | 14 | 16 | 44 | ||
Total | 350 | 350 | 350 | 1050 |