Relationship between the population incidence of pertussis in children in New South Wales, Australia and emergency department visits with cough: a time series analysis

Table 1 Emergency department (ED) visits and disease notifications in children aged under 10 years in New South Wales (NSW), Australia ¹

Age group	Cough ED visits		Pertussis notifications		Influenza notifications		Bronchiolitis ED visits
	N	%	N	%	N	%	N	%
<1 year	6,787	31.2	1,376	11.2	736	17.0	25,975	80.9
1-4 years	10,562	48.6	4,214	34.2	1,862	43.0	6,066	18.9
5-9 years	4,386	20.2	6,721	54.6	1,734	40.0	79	0.2
Total	21,735	100.0	12,311	100.0	4,332	100.0	32,120	100.0

1. Data sources: ED data were obtained from the NSW Emergency Department Data Collection. Disease notifications data were obtained from the NSW Notifiable Conditions Information Management System. Study period: 1 January 2007–31 December 2010.

ISSN: 1472-6947