Table 3.

Number of Records in—and Exclusions from—the Final Database for Each Source Data Set

Number	Source Data Set				All Data Sets
	NHS 111 Telephone Helpline	Ambulance Service	Emergency Department	In-Patient Admissions
Total records	4,789,273	4,382,835	9,822,644	10,308,510	29,303,262
Duplicate records	0	0	1918	188,274	190,192
Other exclusions	0	0	33,456 (outside date range or date missing)	5,533,347 (5,527,416 nonemergency admissions; 5931 out outside of date range or date missing)	5,566,803
Final records	4,789,273	4,382,835	9,787,270	4,586,889	23,546,267