Figure 4From: Relationship between the population incidence of pertussis in children in New South Wales, Australia and emergency department visits with cough: a time series analysis Residual values of the final model 1 . 1. Data sources: Emergency department data were obtained from the New South Wales Emergency Department Data Collection. Disease notifications data were obtained from the New South Wales Notifiable Conditions Information Management System. Study period: 1 January 2007–31 December 2010. Study population: New South Wales children aged under 10 years.Back to article page