Table 1.

Summary of hospital stay results for pertussis by age group

	Infants	Children	Adolescents & Adults
Pertussis cases: n (%)	2,266 (90)	191 (8)	61 (2)
Age range (years)	<1	1 – 11	12 – 83
Mean age (years)	*	3	40
Males (%)	50	37	46
Emergency Department (%)	45	40	45
Observation Unit Stay (%)	0	0	3
Mean Total Length of Stay (days)	6	4	3
Mean Total Cost (per stay)	$9,580	$4,729	$5,310

* Age in months cannot be provided as databases used for this analysis do not provide those data.