Table 2.

Number and Percentage of Records Assigned to a CUREd ID Using Probabilistic Linkage for Each Source Data Set

Number (Column, Percentage)	Source Data Set				All Data Sets
	NHS 111 Telephone Helpline	Ambulance Service	Emergency Department	Inpatient Admissions
Records not deterministically linked/clustered	248	3,024,366	3617	12,901	3,041,132
Probabilistic link to record(s) with (or deterministically linked to) NHS number	4 (1.6%)	886,089 (29.3%)	851 (23.5%)	36 (0.3%)	886,980 (29.2%)
Probabilistic link deterministically clustered records	0 (0.0%)	6289 (0.2%)	0 (0.0%)	0 (0.0%)	6289 (0.2%)
No linkage	244 (98.4%)	2,131,988 (70.5%)	2766 (76.5%)	12,865 (99.7%)	2,147,863 (70.6%)