Estimated cumulative gain per working mother with a first child over a 3-year period
| Postpartum | Prevaccination: days absent from work* | Postvaccination: days absent from work* | Difference (days) | Days gained (216 women)* | |
|---|---|---|---|---|---|
| Average | 1st year | 1.71 | 0.83 | 0.88 | 190 |
| 2nd year | 1.53 | 0.83 | 0.70 | 150 | |
| 3rd year | 1.50 | 0.83 | 0.67 | 144 | |
| Sum | 4.74 | 2.49 | 2.25 | 484 |
*Per working woman with a first child.