Table 1 Numbers of items/streams contributing to cross-checking in different domains

Sector	Domain of standards
Sector	Safety	Clinical and cost-effectiveness	Governance	Patient focus	Access	Environment	Public health
Acute
Items	166	256	473	234	145	127	69
Data sources	33	31	33	30	25	22	20
MH
Items	106	124	380	115	63	86	55
Data sources	21	23	26	22	19	15	16
PCT
Items	110	203	328	119	117	67	185
Data sources	22	24	28	26	22	15	28
Amb
Items	100	47	443	67	17	70	9
Data sources	12	9	16	13	9	11	6