| Table 5. Live birth rates with 95% confidence intervals by age and overall morphology grade | |||
| Age Group (actual average age) | Good (AA/AB/BA) | Fair (BB/CB) | Poor (BC/CC) |
|---|---|---|---|
| 25-32 (29.6) | 51% (27-74%) | 39% (23-56%) | 25% (0-55%) |
| 33 (32.8) | 58% (40-75%) | 34% (23-45%) | 26% (6-48%) |
| 34 (34.3) | 56% (38-73%) | 34% (24-44%) | 29% (11-47%) |
| 35 (35.2) | 54% (37-70%) | 32% (22-42%) | 26% (11-44%) |
| 36 (35.9) | 54% (36-70%) | 33% (23-42%) | 23% (9-38%) |
| 37 (36.6) | 55% (36-74%) | 31% (21-41%) | 21% (9-35%) |
| 38 (38.4) | 40% (19-62%) | 28% (18-39%) | 12% (2-22%) |
| 39 (39.2) | 35% (12-60%) | 25% (15-37%) | 8% (0-18%) |
| 40-44 (41.4) | 22% (0 to 67%) | 14% (3 to 28%) | 8% (0 to 20%) |
7-year moving groups are utilized for ages 33-39 years. Ages 25-32 years and 40-44 years are grouped as fixed groups. Since linear interpolation is not used to center data on each age integer the data for ages 33 through 39 differ slightly from Figure 3 which does use linear interpolation.