Impact of Pneumococcal Conjugate Vaccine on Pediatric Tympanostomy Tube Insertion in Partial Immunized Population

Table 2

Estimates of piecewise terms in Poisson regression models for evaluation of effects of pneumococcal conjugate vaccines against pneumococcal infection on tympanostomy tube insertion among children.

	0–2 years old		2–5 years old		5–9 years old		9–17 years old
		se		se		se		se
Before 2005
After 2005

.