Table 4.

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.