Table 1

Bootstrap adjusted concordance values and 95% confidence intervals (CI) (models including age) for Australian and New Zealand (NZ) hospitalisations

Hospitalisations source	SRR source	Concordance	95% CI
Australia	Australia (ICD-10-AM)	0.906	0.903 to 0.909
	NZ (ICD-10-AM)	0.887	0.884 to 0.891
	Australia (ICD-10)	0.904	0.902 to 0.907
	NZ (ICD-10)	0.885	0.882 to 0.888

New Zealand	NZ (ICD-10-AM)	0.910	0.904 to 0.915
	Australia (ICD-10-AM)	0.905	0.900 to 0.910
	NZ (ICD-10)	0.906	0.900 to 0.911
	Australia (ICD-10)	0.902	0.896 to 0.908